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3=w/2-10
We move all terms to the left:
3-(w/2-10)=0
We get rid of parentheses
-w/2+10+3=0
We multiply all the terms by the denominator
-w+10*2+3*2=0
We add all the numbers together, and all the variables
-1w+26=0
We move all terms containing w to the left, all other terms to the right
-w=-26
w=-26/-1
w=+26
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