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(F)=4F^-3+5F-2
We move all terms to the left:
(F)-(4F^-3+5F-2)=0
We get rid of parentheses
F-4F^-5F+3+2=0
We add all the numbers together, and all the variables
-8F+5=0
We move all terms containing F to the left, all other terms to the right
-8F=-5
F=-5/-8
F=5/8
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