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-3(w+6)+8=-31
We move all terms to the left:
-3(w+6)+8-(-31)=0
We add all the numbers together, and all the variables
-3(w+6)+39=0
We multiply parentheses
-3w-18+39=0
We add all the numbers together, and all the variables
-3w+21=0
We move all terms containing w to the left, all other terms to the right
-3w=-21
w=-21/-3
w=+7
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