Statics - Final Exam problem 4 (frames and machines)

Thermodynamics: drive.google.com/file/d/1bFzQ...
Mechanics of Materials: drive.google.com/file/d/1P-pc...
Statics: drive.google.com/file/d/1aYY5...
Dynamics: drive.google.com/file/d/1_JTk...

[@AdonizedeckAckahBlayMiezah]

If you had solved for the support reactions first it would have been much easier than this tho.

[@abdalmonieemhassan6204]

this is wrong

[@engineeringdeciphered]

Where did I go wrong?