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-9w-41=-7(w+3)
We move all terms to the left:
-9w-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)
-9w+7w+21-41=0
We add all the numbers together, and all the variables
-2w-20=0
We move all terms containing w to the left, all other terms to the right
-2w=20
w=20/-2
w=-10
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