(-3)n+15=30

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



(-3)n+15=30

We move all terms to the left:

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

We add all the numbers together, and all the variables

(-3)n-15=0

We multiply parentheses

-3n-15=0

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

-3n=15

n=15/-3

n=-5

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