m-7m=20

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Solution for m-7m=20 equation: 



m-7m=20

We move all terms to the left:

m-7m-(20)=0

We add all the numbers together, and all the variables

-6m-20=0

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

-6m=20

m=20/-6

m=-3+1/3

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