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(F+3)=8F-8
We move all terms to the left:
(F+3)-(8F-8)=0
We get rid of parentheses
F-8F+3+8=0
We add all the numbers together, and all the variables
-7F+11=0
We move all terms containing F to the left, all other terms to the right
-7F=-11
F=-11/-7
F=1+4/7
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