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251=66-w
We move all terms to the left:
251-(66-w)=0
We add all the numbers together, and all the variables
-(-1w+66)+251=0
We get rid of parentheses
1w-66+251=0
We add all the numbers together, and all the variables
w+185=0
We move all terms containing w to the left, all other terms to the right
w=-185
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