-7+m=-3(m-7)

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Solution for -7+m=-3(m-7) equation: 



-7+m=-3(m-7)

We move all terms to the left:

-7+m-(-3(m-7))=0



We calculate terms in parentheses: -(-3(m-7)), so:

-3(m-7)

We multiply parentheses

-3m+21

Back to the equation:

-(-3m+21)



We get rid of parentheses

m+3m-21-7=0

We add all the numbers together, and all the variables

4m-28=0

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

4m=28

m=28/4

m=7

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