6m+3m=-18

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Solution for 6m+3m=-18 equation: 



6m+3m=-18

We move all terms to the left:

6m+3m-(-18)=0

We add all the numbers together, and all the variables

9m+18=0

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

9m=-18

m=-18/9

m=-2

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