8m-3-12m=9

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Solution for 8m-3-12m=9 equation: 



8m-3-12m=9

We move all terms to the left:

8m-3-12m-(9)=0

We add all the numbers together, and all the variables

-4m-12=0

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

-4m=12

m=12/-4

m=-3

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