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-3(m-8)-(m+5)=126
We move all terms to the left:
-3(m-8)-(m+5)-(126)=0
We multiply parentheses
-3m-(m+5)+24-126=0
We get rid of parentheses
-3m-m-5+24-126=0
We add all the numbers together, and all the variables
-4m-107=0
We move all terms containing m to the left, all other terms to the right
-4m=107
m=107/-4
m=-26+3/4
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