-12=(2m-1)-(7-2m)

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Solution for -12=(2m-1)-(7-2m) equation: 



-12=(2m-1)-(7-2m)

We move all terms to the left:

-12-((2m-1)-(7-2m))=0

We add all the numbers together, and all the variables

-((2m-1)-(-2m+7))-12=0



We calculate terms in parentheses: -((2m-1)-(-2m+7)), so:

(2m-1)-(-2m+7)

We get rid of parentheses

2m+2m-1-7

We add all the numbers together, and all the variables

4m-8

Back to the equation:

-(4m-8)



We get rid of parentheses

-4m+8-12=0

We add all the numbers together, and all the variables

-4m-4=0

We move all terms containing m to the left, all other terms to the right

-4m=4

m=4/-4

m=-1

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