-3n+9=9-3n

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Solution for -3n+9=9-3n equation: 



-3n+9=9-3n

We move all terms to the left:

-3n+9-(9-3n)=0

We add all the numbers together, and all the variables

-3n-(-3n+9)+9=0

We get rid of parentheses

-3n+3n-9+9=0

We add all the numbers together, and all the variables

=0

n=0/1

n=0

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