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100=4w+8
We move all terms to the left:
100-(4w+8)=0
We get rid of parentheses
-4w-8+100=0
We add all the numbers together, and all the variables
-4w+92=0
We move all terms containing w to the left, all other terms to the right
-4w=-92
w=-92/-4
w=+23
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