Solving equations with the distributive property | Linear equations | Algebra I | Khan Academy

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  • čas přidán 10. 06. 2010
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    Solving Equations with the Distributive Property
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    Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.
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Komentáře • 153

  • @aarush.v155
    @aarush.v155 Před 3 lety +71

    this teaches me better than actual school

  • @macaroongaming5579
    @macaroongaming5579 Před 4 lety +56

    Thanks, this is really helping for online school right now

  • @eArtrash
    @eArtrash Před 7 lety +58

    I paused the video straight away and tried to solve, but that invisible 1 really fucked me up at the start bro.

  • @potatonado2550
    @potatonado2550 Před 2 lety +9

    I had to go solve one of these in front of the class and this saved me. My teacher doesn’t explain anything. She tells us what we need to do but she doesn’t explain why and how we are doing it and what it does.

  • @Erik_Montesinos
    @Erik_Montesinos Před 7 lety +61

    THIS GUY DOES EVERYTHING SO Differently!!

  • @raffiboiballs
    @raffiboiballs Před 2 lety +8

    I actually wish this guy was my teacher tbh, thanks my man
    i got an a+ on my math exam cause of this!

  • @ThunderTheBlackShadowKitty
    @ThunderTheBlackShadowKitty Před 11 lety +13

    I always struggled with the Distributive Property. Appreciated.

  • @sinistersmallblock
    @sinistersmallblock Před 3 lety +16

    Once he added the 1 to replace the 9 I got confused. Why is it a -1 instead of -9 x -9X? Why does the 1 replace the 9??

    • @amaryllis.2259
      @amaryllis.2259 Před rokem

      it didnt-

    • @sinistersmallblock
      @sinistersmallblock Před rokem

      @Amaryllis. well that explains everything

    • @amaryllis.2259
      @amaryllis.2259 Před rokem

      @@sinistersmallblock the equation here was -9 -(9x+6) and the minus right next to the parenthesis was a -1 mainly because we needed a number to distribute, it cant be the nine since it is being subtracted by something, so

    • @sinistersmallblock
      @sinistersmallblock Před rokem

      @@amaryllis.2259 thanks for the clarification. I got it now. 👍

  • @Mrjockfire
    @Mrjockfire Před 11 lety +13

    I DID THAT WHOLE THING IN MY HEAD YESSSSS!~!!!!!!!!

  • @l.i.tgamez1057
    @l.i.tgamez1057 Před 6 lety +21

    Please Help Me :''''( I Don't Under Stand a Bit!!!!!!!!!!!!

  • @n3rdyjojo
    @n3rdyjojo Před 11 lety +12

    i think ill pass math thanks to you

  • @iamthestrongest007
    @iamthestrongest007 Před rokem +1

    I don't have any words.. Thank you so much khan academy because of you this just became soo easy. it doesn't matter how hard anything is I just come and search whatever i want to learn by khan academy then boom next minute i am master at it. thank you soo much

  • @wadewilson1021
    @wadewilson1021 Před 7 lety +10

    What about distribution property with exponents

    • @sachingill9902
      @sachingill9902 Před 6 lety +1

      Kelvin Klimson distributive property is only applicable to addition and subtraction with exponents you go back to the basics of exponents. This, correlates to (x+2) squared, then you equate that to x+2 * x+2. Hope that helps.

  • @silverspoon2086
    @silverspoon2086 Před 3 lety +3

    Thank you so much for your help !
    Loved it the vid

  • @magnificentpanda1100
    @magnificentpanda1100 Před 5 lety +4

    -9 is the smallest you would have to subtract it on both sides.. That’s how I was thought and will it work also?

  • @Habanecro
    @Habanecro Před 12 lety +25

    My brain just divided by zero

    • @oliverwei1128
      @oliverwei1128 Před 3 lety

      The answer is not 0 if that is what you are suggesting (HAHAHA)

    • @Habanecro
      @Habanecro Před 3 lety +2

      @@oliverwei1128 man, the good old days where basic algebra was the worst of my problems

    • @SimonKilledYou
      @SimonKilledYou Před 3 lety +3

      @@Habanecro lol

    • @duckxrec
      @duckxrec Před 3 lety +2

      @@Habanecro wow stil here

    • @Habanecro
      @Habanecro Před 3 lety +2

      @@duckxrec just to suffer

  • @matttheawesome1095
    @matttheawesome1095 Před 2 lety +1

    im so confused buy the invisible -1 what is its purpose, why do we put it there? why not just minus -9 from the first expression?

  • @billiestan5934
    @billiestan5934 Před 4 lety +1

    Thank you that was a life saver

  • @giovannilopez5543
    @giovannilopez5543 Před 5 lety +3

    What is the hidden number when there is a negative sign in front of parentheses

  • @oliverwei1128
    @oliverwei1128 Před 3 lety +9

    Very useful video, except I, can imagine that younger viewers could be confused by -1(9x-6) You can simplify this expression by multiplying by 1, not -1.

    • @oliverwei1128
      @oliverwei1128 Před 3 lety

      At the end of the working out, you can also divide by 21 instead of -21.

    • @abdullaalromaihi6440
      @abdullaalromaihi6440 Před 3 lety +1

      why would younger viewers watch this???

    • @elizabethsmith4832
      @elizabethsmith4832 Před 3 lety

      @@abdullaalromaihi6440 bc our moms push stuff on us when where 9 :/

    • @Pedditz
      @Pedditz Před 9 měsíci

      @@abdullaalromaihi6440 That's because people have AP classes.

  • @natasha275
    @natasha275 Před 13 lety +1

    you do a good job

  • @akshobhyamanthati2304
    @akshobhyamanthati2304 Před 3 lety +2

    he always does the easy questions and not the hard ones

  • @Smoove499
    @Smoove499 Před 6 lety +3

    Omfgggg why can't I understand math it takes me way slower to comprehend math then other people I just don't know also don't know how I got straight B's😂

  • @corsinchristoffel3288
    @corsinchristoffel3288 Před 11 lety

    math is a science without it no other science could exist

  • @annatilles
    @annatilles Před 3 lety +1

    why did you add that 1 up there? i dont get that

  • @EssencePC
    @EssencePC Před 2 lety

    the fact that teaches me better than school says something

  • @legsaysstuff1877
    @legsaysstuff1877 Před 3 lety +1

    seriosly doe sal your an absolutely amazing teacher other then the fact you talk soooooooooo slow

  • @lilreaper7367
    @lilreaper7367 Před 7 měsíci

    big help thx

  • @rodrigogaona4574
    @rodrigogaona4574 Před 4 lety

    nice video!

  • @Conner-fd3yn
    @Conner-fd3yn Před 8 lety +1

    this guy sounds like my guidance. named Dr blue

  • @ImFlamez
    @ImFlamez Před 6 lety +2

    You saved my life i would totallu sub but that is a social crisis waiting to happen but really though it really helped me do my work thanks!

  • @JD-ez8fg
    @JD-ez8fg Před 6 lety

    I have a problem similar to this one but the answer don't show in the result

  • @TheStoicDatingDiary
    @TheStoicDatingDiary Před 6 měsíci

    Anyone could explain in better words why he worked the 12X twice in both sides? I got confused there because I remembered differently back in school but in not confident cuz it was a decade ago, I’m refreshing for college at this moment

  • @CoronaLisaa
    @CoronaLisaa Před 9 měsíci

    thanks for this video

  • @shantanukelkar1508
    @shantanukelkar1508 Před 3 lety +1

    everyone:- trying to understand the concept
    me:- trying to figure out how he writes so neatly on computer

    • @619Gotenks
      @619Gotenks Před 3 lety

      He's using a drawing pen for a tablet :)

    • @meenaalturki7660
      @meenaalturki7660 Před 3 lety

      ikr!

    • @shantanukelkar1508
      @shantanukelkar1508 Před 3 lety

      @@619Gotenks I don’t think so because there is a cursor kind of thing on the screen

    • @619Gotenks
      @619Gotenks Před 3 lety

      @@shantanukelkar1508 it shows up when you hold the pen close to the screen :)

  • @fatmaali8587
    @fatmaali8587 Před 5 lety

    he kind of sounds like Scott Disick

  • @27mosquitoes
    @27mosquitoes Před rokem

    ka is always a lifesaver

  • @mzmmoh98
    @mzmmoh98 Před 12 lety +1

    What software is this?

  • @anyview2264
    @anyview2264 Před 9 lety +1

    usually we subtracted the -21x\ +21 and another side 21 under +21 equal 42 then x=42
    how you come up with -21 in first place, Pleas could you tell me . thanks

    • @celena84ever
      @celena84ever Před 9 lety

      He came up with 21 when you subtract -9 -12=21

  • @bruhiyo2369
    @bruhiyo2369 Před 2 lety

    Thanks

  • @chloemajeske6189
    @chloemajeske6189 Před 10 lety +10

    Why does he always start da video," So we have the equation....."?

    • @Zohirul-Jewel
      @Zohirul-Jewel Před 9 lety +6

      +Aura Wolf Why not? it works well, and you know what the video is about from the title of the video.

    • @exist7nce2801
      @exist7nce2801 Před 4 lety +1

      Because it’s a equation-.-

  • @jimmynvrz6925
    @jimmynvrz6925 Před 9 lety +6

    Why did you use -1? how come you did not used just a +1?

    • @berliandro
      @berliandro Před 7 lety +1

      Positive( + ) number divided by Negative( - ) number equals Negative( - ) and viseversa

    • @Death_User666
      @Death_User666 Před 7 lety +4

      pay attention

  • @Izzykatt
    @Izzykatt Před 10 lety +8

    -_- to fast

    • @shazaali2854
      @shazaali2854 Před 6 lety +8

      izzekatt that's why you pause the video

  • @mOnK27640
    @mOnK27640 Před 11 lety

    how did you get the +6 to turn into a negative 6 without knowing that its a -1 at the start?

    • @magnificentpanda1100
      @magnificentpanda1100 Před 5 lety

      If there is a variable next to the number you would do the opposite
      Ex: 9x - 6
      9x +6
      See the difference
      But if you’re adding you would subtract
      Ex: 9x+6
      9x-6

  • @archerino
    @archerino Před 8 lety

    dude how many videos has he made?

  • @spongebobmjfan23
    @spongebobmjfan23 Před 2 lety

    6:02

  • @thebiggestobjfan3344
    @thebiggestobjfan3344 Před 8 lety

    21

  • @kalzorath
    @kalzorath Před 13 lety

    you make great tutorials, thanks.

    • @MightBeNoir
      @MightBeNoir Před 2 lety

      You finished with school? Hope you enjoying your life rn

  • @Matthew-cebu
    @Matthew-cebu Před 6 měsíci +1

    good++

  • @AdahLael
    @AdahLael Před 11 lety

    One of the best ways to make money is to get a good job. Two of the best fields for getting a job are Computer Science and Engineering. Both of those fields take LOTS OF MATH. Which you use every day. Basically, the more math you learn in school, the higher your paycheck will be. Look it up.

    • @thatsdavo
      @thatsdavo Před 5 lety

      Adah Chachere shut up no one
      Cares

  • @aidanwallace25
    @aidanwallace25 Před 4 lety

    Densmore?

  • @clarkohana4
    @clarkohana4 Před 8 lety +2

    You helped me!

  • @Thatonexboxman6090
    @Thatonexboxman6090 Před 10 měsíci

    My brain just multiplied by 0

  • @dohertyethan
    @dohertyethan Před 6 měsíci

    this is the classic

  • @lalbert2299
    @lalbert2299 Před 7 lety

    very well explained

  • @MeHasComputer
    @MeHasComputer Před 13 lety

    @kalzorath guess what. shaddup

  • @burningman8066
    @burningman8066 Před 5 lety

    can you do something like 3−2(9+2m)=m cuz i i have no idea how to do it and im a math genius which says a lot

    • @burningman8066
      @burningman8066 Před 3 lety

      @Iker Coto Zamudio lmao its easy now, I believe that was when like I has in the beginning of 7th grade, basically skipped a whole grade of math. it was hard at the time lol. I'm in 10th now its fine lol. still a math genius for my age though, I have the accolades to back it up, too.

  • @charityongoing422
    @charityongoing422 Před 7 lety

    whay arbic sous-titres not available????

    • @dareal2669
      @dareal2669 Před 7 lety

      ليس يترجم بالعربي مشكلتك انك ما تعرف انجليزي

    • @aisha_alfakeh1208
      @aisha_alfakeh1208 Před 4 lety

      absoluty

  • @elianamaurer502
    @elianamaurer502 Před 7 lety

    I have a great in two days. you just saved my life.

  • @XxQUICKVENOMxX
    @XxQUICKVENOMxX Před 13 lety

    @vishnuisme C = 3

  • @spiritsoftheangel
    @spiritsoftheangel Před 13 lety

    @MeHasComputer got something against math tutorials or something?

  • @idriftabmw
    @idriftabmw Před 13 lety +2

    I PASSED MY TEST BECAUSEE OF THIS.

  • @Fangornmmc
    @Fangornmmc Před 13 lety

    Dear Khan, please please please make a video about the huge differences between communism and socialism. Most Americans seem to misunderstand this subject, likely deeming it anti-american and probably a remainder of the policies during the vietnam war and all the propaganda involved.

    • @Fangornmmc
      @Fangornmmc Před 2 lety

      @David Chen lol, don't worry, that was ten years ago. I know better now.

    • @diamondtheif4007
      @diamondtheif4007 Před 2 lety

      @@Fangornmmc do you understand the differences now

    • @Fangornmmc
      @Fangornmmc Před 2 lety

      @@diamondtheif4007 Yes!

  • @jacobbess206
    @jacobbess206 Před 3 lety

    Gengis Khan

  • @viktorganchev1855
    @viktorganchev1855 Před 7 měsíci

    What if everyone subscribed to Khan Academy donated 5$ to the Khan Academy fundraiser?
    Sal would get 40,600,000 Dollars

  • @jaydewash1225
    @jaydewash1225 Před 7 lety +2

    be my teacher!

  • @MeHasComputer
    @MeHasComputer Před 13 lety

    @spiritsoftheangel

  • @Ariel-sb4jq
    @Ariel-sb4jq Před 11 měsíci +1

    still confused

  • @kalzorath
    @kalzorath Před 13 lety

    @MeHasComputer ?????

  • @Kipo03
    @Kipo03 Před 6 lety +1

    mkay

  • @giovannilopez5543
    @giovannilopez5543 Před 5 lety

    What is meant by combining like terms

  • @jaxsonm6466
    @jaxsonm6466 Před rokem

    why cant teachers teach like this

  • @giovannilopez5543
    @giovannilopez5543 Před 5 lety

    What is meant by distributive property

  • @unfoundsoul2543
    @unfoundsoul2543 Před 7 lety

    lol.. easy asf thanks khan academy.

  • @jacobbess206
    @jacobbess206 Před 3 lety

    i just had to watch moomoo math and science

  • @ericspace121
    @ericspace121 Před 10 lety +1

    That's a joke right?

  • @iresco3924
    @iresco3924 Před 3 lety

    b

  • @SebastianPinto-rg4wc
    @SebastianPinto-rg4wc Před 6 měsíci +1

    i like turtles

  • @wadewilson1021
    @wadewilson1021 Před 7 lety

    Lol

  • @El.x.Z
    @El.x.Z Před 6 lety +2

    Honestly, I hate math!!

  • @user-ef9qz4rp8w
    @user-ef9qz4rp8w Před 2 lety +1

    Jesus Christ is Lord he Loves us.

  • @latreykirk9376
    @latreykirk9376 Před 12 lety

    math is so overated were not going to be using it when we get older the only thing we should be worry about is money and all that

  • @jorialjiran724
    @jorialjiran724 Před 6 lety

    helpful but.....BORING he makes everything look so easy

    • @omarhatem9575
      @omarhatem9575 Před 4 lety

      Maybe because it is his job to make it look and easy.
      He is a teacher.

  • @jameschiri1726
    @jameschiri1726 Před 6 lety +2

    I hate math

  • @satnus3388
    @satnus3388 Před 2 lety

    This is not entertaining and really bores me out. I'm never watching any of these videos again!

  • @Juice-wrld_for-life
    @Juice-wrld_for-life Před 3 měsíci

    Hello no English blud

  • @avoops122
    @avoops122 Před 3 lety +2

    Thanks, this is really helping for online school right now