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3(w+13)=-12
We move all terms to the left:
3(w+13)-(-12)=0
We add all the numbers together, and all the variables
3(w+13)+12=0
We multiply parentheses
3w+39+12=0
We add all the numbers together, and all the variables
3w+51=0
We move all terms containing w to the left, all other terms to the right
3w=-51
w=-51/3
w=-17
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