Question

PLEASE HELP ASAP! WILL UPVOTE!

Answer 1

1.  equation A is multiplied by -2, yah, right form
turns to -2y=-30+4z
2. wrong, yo didn't distribute the -2 at all, it just dissaperaed, who taught that student how to do math?
after this, all steps are wrong because step 2 is wrong


error in step 2