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-12+8w=6w+128
We move all terms to the left:
-12+8w-(6w+128)=0
We get rid of parentheses
8w-6w-128-12=0
We add all the numbers together, and all the variables
2w-140=0
We move all terms containing w to the left, all other terms to the right
2w=140
w=140/2
w=70
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