21=m+9m=11

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Solution for 21=m+9m=11 equation: 



21=m+9m=11

We move all terms to the left:

21-(m+9m)=0

We add all the numbers together, and all the variables

-(+10m)+21=0

We get rid of parentheses

-10m+21=0

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

-10m=-21

m=-21/-10

m=2+1/10

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