9m+4m=-12+7m+3-9

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Solution for 9m+4m=-12+7m+3-9 equation: 



9m+4m=-12+7m+3-9

We move all terms to the left:

9m+4m-(-12+7m+3-9)=0

We add all the numbers together, and all the variables

9m+4m-(7m-18)=0

We add all the numbers together, and all the variables

13m-(7m-18)=0

We get rid of parentheses

13m-7m+18=0

We add all the numbers together, and all the variables

6m+18=0

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

6m=-18

m=-18/6

m=-3

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