-9-3n=9-9n

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



-9-3n=9-9n

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

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

We add all the numbers together, and all the variables

6n-18=0

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

6n=18

n=18/6

n=3

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