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29=w/2+12
We move all terms to the left:
29-(w/2+12)=0
We get rid of parentheses
-w/2-12+29=0
We multiply all the terms by the denominator
-w-12*2+29*2=0
We add all the numbers together, and all the variables
-1w+34=0
We move all terms containing w to the left, all other terms to the right
-w=-34
w=-34/-1
w=+34
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