n-9=-9+n

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



n-9=-9+n

We move all terms to the left:

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

We add all the numbers together, and all the variables

n-(n-9)-9=0

We get rid of parentheses

n-n+9-9=0

We add all the numbers together, and all the variables

=0

n=0/1

n=0

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