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56=8(f-86)
We move all terms to the left:
56-(8(f-86))=0
We calculate terms in parentheses: -(8(f-86)), so:We get rid of parentheses
8(f-86)
We multiply parentheses
8f-688
Back to the equation:
-(8f-688)
-8f+688+56=0
We add all the numbers together, and all the variables
-8f+744=0
We move all terms containing f to the left, all other terms to the right
-8f=-744
f=-744/-8
f=+93
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