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3(7+w)=2(w-1)
We move all terms to the left:
3(7+w)-(2(w-1))=0
We add all the numbers together, and all the variables
3(w+7)-(2(w-1))=0
We multiply parentheses
3w-(2(w-1))+21=0
We calculate terms in parentheses: -(2(w-1)), so:We get rid of parentheses
2(w-1)
We multiply parentheses
2w-2
Back to the equation:
-(2w-2)
3w-2w+2+21=0
We add all the numbers together, and all the variables
w+23=0
We move all terms containing w to the left, all other terms to the right
w=-23
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