-7+3n+15=-13

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Solution for -7+3n+15=-13 equation: 



-7+3n+15=-13

We move all terms to the left:

-7+3n+15-(-13)=0

We add all the numbers together, and all the variables

3n+21=0

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

3n=-21

n=-21/3

n=-7

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