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(F)=3.5F-8
We move all terms to the left:
(F)-(3.5F-8)=0
We get rid of parentheses
F-3.5F+8=0
We add all the numbers together, and all the variables
-2.5F+8=0
We move all terms containing F to the left, all other terms to the right
-2.5F=-8
F=-8/-2.5
F=3+0.5/2.5
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