18+3m=-12

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Solution for 18+3m=-12 equation: 



18+3m=-12

We move all terms to the left:

18+3m-(-12)=0

We add all the numbers together, and all the variables

3m+30=0

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

3m=-30

m=-30/3

m=-10

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