2m+m-3=18

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Solution for 2m+m-3=18 equation: 



2m+m-3=18

We move all terms to the left:

2m+m-3-(18)=0

We add all the numbers together, and all the variables

3m-21=0

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

3m=21

m=21/3

m=7

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