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64=8(w+40)
We move all terms to the left:
64-(8(w+40))=0
We calculate terms in parentheses: -(8(w+40)), so:We get rid of parentheses
8(w+40)
We multiply parentheses
8w+320
Back to the equation:
-(8w+320)
-8w-320+64=0
We add all the numbers together, and all the variables
-8w-256=0
We move all terms containing w to the left, all other terms to the right
-8w=256
w=256/-8
w=-32
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