N2-31n+90=-8n

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Solution for N2-31n+90=-8n equation: 



2-31N+90=-8N

We move all terms to the left:

2-31N+90-(-8N)=0

We add all the numbers together, and all the variables

-31N-(-8N)+92=0

We get rid of parentheses

-31N+8N+92=0

We add all the numbers together, and all the variables

-23N+92=0

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

-23N=-92

N=-92/-23

N=+4

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