-4n+9=-4n-9

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Solution for -4n+9=-4n-9 equation: 



-4n+9=-4n-9

We move all terms to the left:

-4n+9-(-4n-9)=0

We get rid of parentheses

-4n+4n+9+9=0

We add all the numbers together, and all the variables

18!=0

There is no solution for this equation

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