18=-5n-4n

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Solution for 18=-5n-4n equation: 



18=-5n-4n

We move all terms to the left:

18-(-5n-4n)=0

We add all the numbers together, and all the variables

-(-9n)+18=0

We get rid of parentheses

9n+18=0

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

9n=-18

n=-18/9

n=-2

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