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50=210+2w
We move all terms to the left:
50-(210+2w)=0
We add all the numbers together, and all the variables
-(2w+210)+50=0
We get rid of parentheses
-2w-210+50=0
We add all the numbers together, and all the variables
-2w-160=0
We move all terms containing w to the left, all other terms to the right
-2w=160
w=160/-2
w=-80
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