3=9+n

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Solution for 3=9+n equation: 



3=9+n

We move all terms to the left:

3-(9+n)=0

We add all the numbers together, and all the variables

-(n+9)+3=0

We get rid of parentheses

-n-9+3=0

We add all the numbers together, and all the variables

-1n-6=0

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

-n=6

n=6/-1

n=-6

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