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-6(w+20)=42
We move all terms to the left:
-6(w+20)-(42)=0
We multiply parentheses
-6w-120-42=0
We add all the numbers together, and all the variables
-6w-162=0
We move all terms containing w to the left, all other terms to the right
-6w=162
w=162/-6
w=-27
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