9=6n-9-3n

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Solution for 9=6n-9-3n equation: 



9=6n-9-3n

We move all terms to the left:

9-(6n-9-3n)=0

We add all the numbers together, and all the variables

-(3n-9)+9=0

We get rid of parentheses

-3n+9+9=0

We add all the numbers together, and all the variables

-3n+18=0

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

-3n=-18

n=-18/-3

n=+6

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