-15=n-7+3n

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Solution for -15=n-7+3n equation: 



-15=n-7+3n

We move all terms to the left:

-15-(n-7+3n)=0

We add all the numbers together, and all the variables

-(4n-7)-15=0

We get rid of parentheses

-4n+7-15=0

We add all the numbers together, and all the variables

-4n-8=0

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

-4n=8

n=8/-4

n=-2

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