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(F)=4F-2^7
We move all terms to the left:
(F)-(4F-2^7)=0
We get rid of parentheses
F-4F+2^7=0
We add all the numbers together, and all the variables
-3F+128=0
We move all terms containing F to the left, all other terms to the right
-3F=-128
F=-128/-3
F=42+2/3
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