n=-9-2n

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Solution for n=-9-2n equation: 



n=-9-2n

We move all terms to the left:

n-(-9-2n)=0

We add all the numbers together, and all the variables

n-(-2n-9)=0

We get rid of parentheses

n+2n+9=0

We add all the numbers together, and all the variables

3n+9=0

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

3n=-9

n=-9/3

n=-3

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