9m+3m=18

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Solution for 9m+3m=18 equation: 



9m+3m=18

We move all terms to the left:

9m+3m-(18)=0

We add all the numbers together, and all the variables

12m-18=0

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

12m=18

m=18/12

m=1+1/2

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