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70w-30=-3(2-5w)
We move all terms to the left:
70w-30-(-3(2-5w))=0
We add all the numbers together, and all the variables
70w-(-3(-5w+2))-30=0
We calculate terms in parentheses: -(-3(-5w+2)), so:We get rid of parentheses
-3(-5w+2)
We multiply parentheses
15w-6
Back to the equation:
-(15w-6)
70w-15w+6-30=0
We add all the numbers together, and all the variables
55w-24=0
We move all terms containing w to the left, all other terms to the right
55w=24
w=24/55
w=24/55
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