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290=87-w
We move all terms to the left:
290-(87-w)=0
We add all the numbers together, and all the variables
-(-1w+87)+290=0
We get rid of parentheses
1w-87+290=0
We add all the numbers together, and all the variables
w+203=0
We move all terms containing w to the left, all other terms to the right
w=-203
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