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(F)=7F-27
We move all terms to the left:
(F)-(7F-27)=0
We get rid of parentheses
F-7F+27=0
We add all the numbers together, and all the variables
-6F+27=0
We move all terms containing F to the left, all other terms to the right
-6F=-27
F=-27/-6
F=4+1/2
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