9+7n=9-8n

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Solution for 9+7n=9-8n equation: 



9+7n=9-8n

We move all terms to the left:

9+7n-(9-8n)=0

We add all the numbers together, and all the variables

7n-(-8n+9)+9=0

We get rid of parentheses

7n+8n-9+9=0

We add all the numbers together, and all the variables

15n=0

n=0/15

n=0

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