-6+9n=15-12n

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Solution for -6+9n=15-12n equation: 



-6+9n=15-12n

We move all terms to the left:

-6+9n-(15-12n)=0

We add all the numbers together, and all the variables

9n-(-12n+15)-6=0

We get rid of parentheses

9n+12n-15-6=0

We add all the numbers together, and all the variables

21n-21=0

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

21n=21

n=21/21

n=1

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