m+2+1=-9-3m

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Solution for m+2+1=-9-3m equation: 



m+2+1=-9-3m

We move all terms to the left:

m+2+1-(-9-3m)=0

We add all the numbers together, and all the variables

m-(-3m-9)+2+1=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

m+3m+9+3=0

We add all the numbers together, and all the variables

4m+12=0

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

4m=-12

m=-12/4

m=-3

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