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6w-42=-2(w-3)
We move all terms to the left:
6w-42-(-2(w-3))=0
We calculate terms in parentheses: -(-2(w-3)), so:We get rid of parentheses
-2(w-3)
We multiply parentheses
-2w+6
Back to the equation:
-(-2w+6)
6w+2w-6-42=0
We add all the numbers together, and all the variables
8w-48=0
We move all terms containing w to the left, all other terms to the right
8w=48
w=48/8
w=6
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