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(512.50+m)-249.95=482.55
We move all terms to the left:
(512.50+m)-249.95-(482.55)=0
We add all the numbers together, and all the variables
(m+512.5)-249.95-(482.55)=0
We add all the numbers together, and all the variables
(m+512.5)-732.5=0
We get rid of parentheses
m+512.5-732.5=0
We add all the numbers together, and all the variables
m-220=0
We move all terms containing m to the left, all other terms to the right
m=220
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