n+3=-3n+15

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



n+3=-3n+15

We move all terms to the left:

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

We get rid of parentheses

n+3n-15+3=0

We add all the numbers together, and all the variables

4n-12=0

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

4n=12

n=12/4

n=3

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