9-(3n-15)=30

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Solution for 9-(3n-15)=30 equation: 



9-(3n-15)=30

We move all terms to the left:

9-(3n-15)-(30)=0

We add all the numbers together, and all the variables

-(3n-15)-21=0

We get rid of parentheses

-3n+15-21=0

We add all the numbers together, and all the variables

-3n-6=0

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

-3n=6

n=6/-3

n=-2

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