m+3=12+2m

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Solution for m+3=12+2m equation: 



m+3=12+2m

We move all terms to the left:

m+3-(12+2m)=0

We add all the numbers together, and all the variables

m-(2m+12)+3=0

We get rid of parentheses

m-2m-12+3=0

We add all the numbers together, and all the variables

-1m-9=0

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

-m=9

m=9/-1

m=-9

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