12m=-(-7m)

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Solution for 12m=-(-7m) equation: 



12m=-(-7m)

We move all terms to the left:

12m-(-(-7m))=0



We calculate terms in parentheses: -(-(-7m)), so:

-(-7m)

We get rid of parentheses

7m

Back to the equation:

-(7m)



We add all the numbers together, and all the variables

5m=0

m=0/5

m=0

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