15n-45=-2(-6n-9)

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Solution for 15n-45=-2(-6n-9) equation: 



15n-45=-2(-6n-9)

We move all terms to the left:

15n-45-(-2(-6n-9))=0



We calculate terms in parentheses: -(-2(-6n-9)), so:

-2(-6n-9)

We multiply parentheses

12n+18

Back to the equation:

-(12n+18)



We get rid of parentheses

15n-12n-18-45=0

We add all the numbers together, and all the variables

3n-63=0

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

3n=63

n=63/3

n=21

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