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m+2m-6+6=12+2m
We move all terms to the left:
m+2m-6+6-(12+2m)=0
We add all the numbers together, and all the variables
m+2m-(2m+12)-6+6=0
We add all the numbers together, and all the variables
3m-(2m+12)=0
We get rid of parentheses
3m-2m-12=0
We add all the numbers together, and all the variables
m-12=0
We move all terms containing m to the left, all other terms to the right
m=12
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