-15=3n+2n

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Solution for -15=3n+2n equation: 



-15=3n+2n

We move all terms to the left:

-15-(3n+2n)=0

We add all the numbers together, and all the variables

-(+5n)-15=0

We get rid of parentheses

-5n-15=0

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

-5n=15

n=15/-5

n=-3

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