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5w-12=2(w+9)
We move all terms to the left:
5w-12-(2(w+9))=0
We calculate terms in parentheses: -(2(w+9)), so:We get rid of parentheses
2(w+9)
We multiply parentheses
2w+18
Back to the equation:
-(2w+18)
5w-2w-18-12=0
We add all the numbers together, and all the variables
3w-30=0
We move all terms containing w to the left, all other terms to the right
3w=30
w=30/3
w=10
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