8n+9=-9-n

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Solution for 8n+9=-9-n equation: 



8n+9=-9-n

We move all terms to the left:

8n+9-(-9-n)=0

We add all the numbers together, and all the variables

8n-(-1n-9)+9=0

We get rid of parentheses

8n+1n+9+9=0

We add all the numbers together, and all the variables

9n+18=0

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

9n=-18

n=-18/9

n=-2

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