3m-9=-7(m+7)

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Solution for 3m-9=-7(m+7) equation: 



3m-9=-7(m+7)

We move all terms to the left:

3m-9-(-7(m+7))=0



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

-7(m+7)

We multiply parentheses

-7m-49

Back to the equation:

-(-7m-49)



We get rid of parentheses

3m+7m+49-9=0

We add all the numbers together, and all the variables

10m+40=0

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

10m=-40

m=-40/10

m=-4

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