Ok so first we subtract 11 on each side so we get a-11=4b-4c then we do-4b on each side to gets a-11-4b=-4c finally divide -4 to each side to get a-11-4b/-4=c
-4c=a-11-4b Isolate c variable
c=(a-11-4b)/-4 Divide by -4 to further isolate c
The Answer is the third one.
