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-4(w-84)=8
We move all terms to the left:
-4(w-84)-(8)=0
We multiply parentheses
-4w+336-8=0
We add all the numbers together, and all the variables
-4w+328=0
We move all terms containing w to the left, all other terms to the right
-4w=-328
w=-328/-4
w=+82
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