3m+9=m-3

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Solution for 3m+9=m-3 equation: 



3m+9=m-3

We move all terms to the left:

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

We get rid of parentheses

3m-m+3+9=0

We add all the numbers together, and all the variables

2m+12=0

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

2m=-12

m=-12/2

m=-6

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