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34=w/2+12
We move all terms to the left:
34-(w/2+12)=0
We get rid of parentheses
-w/2-12+34=0
We multiply all the terms by the denominator
-w-12*2+34*2=0
We add all the numbers together, and all the variables
-1w+44=0
We move all terms containing w to the left, all other terms to the right
-w=-44
w=-44/-1
w=+44
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