-3=-9+2n

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Solution for -3=-9+2n equation: 



-3=-9+2n

We move all terms to the left:

-3-(-9+2n)=0

We add all the numbers together, and all the variables

-(2n-9)-3=0

We get rid of parentheses

-2n+9-3=0

We add all the numbers together, and all the variables

-2n+6=0

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

-2n=-6

n=-6/-2

n=+3

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