7=9m-20

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Solution for 7=9m-20 equation: 



7=9m-20

We move all terms to the left:

7-(9m-20)=0

We get rid of parentheses

-9m+20+7=0

We add all the numbers together, and all the variables

-9m+27=0

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

-9m=-27

m=-27/-9

m=+3

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