9n+9=5n-15

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Solution for 9n+9=5n-15 equation: 



9n+9=5n-15

We move all terms to the left:

9n+9-(5n-15)=0

We get rid of parentheses

9n-5n+15+9=0

We add all the numbers together, and all the variables

4n+24=0

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

4n=-24

n=-24/4

n=-6

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