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2m=-12-10m
We move all terms to the left:
2m-(-12-10m)=0
We add all the numbers together, and all the variables
2m-(-10m-12)=0
We get rid of parentheses
2m+10m+12=0
We add all the numbers together, and all the variables
12m+12=0
We move all terms containing m to the left, all other terms to the right
12m=-12
m=-12/12
m=-1
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