2m-9=-7m

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Solution for 2m-9=-7m equation: 



2m-9=-7m

We move all terms to the left:

2m-9-(-7m)=0

We get rid of parentheses

2m+7m-9=0

We add all the numbers together, and all the variables

9m-9=0

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

9m=9

m=9/9

m=1

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