N2=9-3n

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Solution for N2=9-3n equation: 



2=9-3N

We move all terms to the left:

2-(9-3N)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

3N-9+2=0

We add all the numbers together, and all the variables

3N-7=0

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

3N=7

N=7/3

N=2+1/3

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