3(2m+7)=-(21m+276)

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Solution for 3(2m+7)=-(21m+276) equation: 



3(2m+7)=-(21m+276)

We move all terms to the left:

3(2m+7)-(-(21m+276))=0

We multiply parentheses

6m-(-(21m+276))+21=0



We calculate terms in parentheses: -(-(21m+276)), so:

-(21m+276)

We get rid of parentheses

-21m-276

Back to the equation:

-(-21m-276)



We get rid of parentheses

6m+21m+276+21=0

We add all the numbers together, and all the variables

27m+297=0

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

27m=-297

m=-297/27

m=-11

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