12m-(-2m)=3m

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Solution for 12m-(-2m)=3m equation: 



12m-(-2m)=3m

We move all terms to the left:

12m-(-2m)-(3m)=0

We add all the numbers together, and all the variables

9m-(-2m)=0

We get rid of parentheses

9m+2m=0

We add all the numbers together, and all the variables

11m=0

m=0/11

m=0

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