31-7m=-3(3+5m)

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Solution for 31-7m=-3(3+5m) equation: 



31-7m=-3(3+5m)

We move all terms to the left:

31-7m-(-3(3+5m))=0

We add all the numbers together, and all the variables

-7m-(-3(5m+3))+31=0



We calculate terms in parentheses: -(-3(5m+3)), so:

-3(5m+3)

We multiply parentheses

-15m-9

Back to the equation:

-(-15m-9)



We get rid of parentheses

-7m+15m+9+31=0

We add all the numbers together, and all the variables

8m+40=0

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

8m=-40

m=-40/8

m=-5

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