2n+12=5n-15

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Solution for 2n+12=5n-15 equation: 



2n+12=5n-15

We move all terms to the left:

2n+12-(5n-15)=0

We get rid of parentheses

2n-5n+15+12=0

We add all the numbers together, and all the variables

-3n+27=0

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

-3n=-27

n=-27/-3

n=+9

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