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

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Solution for 3(n+6)=9(n-6) equation: 



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

We move all terms to the left:

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

We multiply parentheses

3n-(9(n-6))+18=0



We calculate terms in parentheses: -(9(n-6)), so:

9(n-6)

We multiply parentheses

9n-54

Back to the equation:

-(9n-54)



We get rid of parentheses

3n-9n+54+18=0

We add all the numbers together, and all the variables

-6n+72=0

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

-6n=-72

n=-72/-6

n=+12

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