-(5m+7)=3(7+3m)

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Solution for -(5m+7)=3(7+3m) equation: 



-(5m+7)=3(7+3m)

We move all terms to the left:

-(5m+7)-(3(7+3m))=0

We add all the numbers together, and all the variables

-(5m+7)-(3(3m+7))=0

We get rid of parentheses

-5m-(3(3m+7))-7=0



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

3(3m+7)

We multiply parentheses

9m+21

Back to the equation:

-(9m+21)



We get rid of parentheses

-5m-9m-21-7=0

We add all the numbers together, and all the variables

-14m-28=0

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

-14m=28

m=28/-14

m=-2

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