4n-12=-5n+15

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Solution for 4n-12=-5n+15 equation: 



4n-12=-5n+15

We move all terms to the left:

4n-12-(-5n+15)=0

We get rid of parentheses

4n+5n-15-12=0

We add all the numbers together, and all the variables

9n-27=0

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

9n=27

n=27/9

n=3

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