20 points. solve for c. a=11+4b−4c

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.

answer: for each 3 girls there is 2 boys . 3: 2

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