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16=m-12+3m
We move all terms to the left:
16-(m-12+3m)=0
We add all the numbers together, and all the variables
-(4m-12)+16=0
We get rid of parentheses
-4m+12+16=0
We add all the numbers together, and all the variables
-4m+28=0
We move all terms containing m to the left, all other terms to the right
-4m=-28
m=-28/-4
m=+7
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