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6w-40=-2(w-8)
We move all terms to the left:
6w-40-(-2(w-8))=0
We calculate terms in parentheses: -(-2(w-8)), so:We get rid of parentheses
-2(w-8)
We multiply parentheses
-2w+16
Back to the equation:
-(-2w+16)
6w+2w-16-40=0
We add all the numbers together, and all the variables
8w-56=0
We move all terms containing w to the left, all other terms to the right
8w=56
w=56/8
w=7
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