-m+9=30

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Solution for -m+9=30 equation: 



-m+9=30

We move all terms to the left:

-m+9-(30)=0

We add all the numbers together, and all the variables

-1m-21=0

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

-m=21

m=21/-1

m=-21

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