9=3(m-9)-m

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Solution for 9=3(m-9)-m equation: 



9=3(m-9)-m

We move all terms to the left:

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



We calculate terms in parentheses: -(3(m-9)-m), so:

3(m-9)-m

We add all the numbers together, and all the variables

-1m+3(m-9)

We multiply parentheses

-1m+3m-27

We add all the numbers together, and all the variables

2m-27

Back to the equation:

-(2m-27)



We get rid of parentheses

-2m+27+9=0

We add all the numbers together, and all the variables

-2m+36=0

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

-2m=-36

m=-36/-2

m=+18

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