9(n)=-n

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Solution for 9(n)=-n equation: 



9(n)=-n

We move all terms to the left:

9(n)-(-n)=0

We add all the numbers together, and all the variables

9n-(-1n)=0

We get rid of parentheses

9n+1n=0

We add all the numbers together, and all the variables

10n=0

n=0/10

n=0

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