9=3(9-n)

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



9=3(9-n)

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(3(-1n+9))+9=0



We calculate terms in parentheses: -(3(-1n+9)), so:

3(-1n+9)

We multiply parentheses

-3n+27

Back to the equation:

-(-3n+27)



We get rid of parentheses

3n-27+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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