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42.5=2(13.125+w)
We move all terms to the left:
42.5-(2(13.125+w))=0
We add all the numbers together, and all the variables
-(2(w+13.125))+42.5=0
We calculate terms in parentheses: -(2(w+13.125)), so:We get rid of parentheses
2(w+13.125)
We multiply parentheses
2w+26.25
Back to the equation:
-(2w+26.25)
-2w-26.25+42.5=0
We add all the numbers together, and all the variables
-2w+16.25=0
We move all terms containing w to the left, all other terms to the right
-2w=-16.25
w=-16.25/-2
w=8+0.25/2
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