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3w-41=-7(w+3)
We move all terms to the left:
3w-41-(-7(w+3))=0
We calculate terms in parentheses: -(-7(w+3)), so:We get rid of parentheses
-7(w+3)
We multiply parentheses
-7w-21
Back to the equation:
-(-7w-21)
3w+7w+21-41=0
We add all the numbers together, and all the variables
10w-20=0
We move all terms containing w to the left, all other terms to the right
10w=20
w=20/10
w=2
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