21=m/9-17

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Solution for 21=m/9-17 equation: 



21=m/9-17

We move all terms to the left:

21-(m/9-17)=0

We get rid of parentheses

-m/9+17+21=0

We multiply all the terms by the denominator


-m+17*9+21*9=0

We add all the numbers together, and all the variables

-1m+342=0

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

-m=-342

m=-342/-1

m=+342

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