7n=9+8n

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Solution for 7n=9+8n equation: 



7n=9+8n

We move all terms to the left:

7n-(9+8n)=0

We add all the numbers together, and all the variables

7n-(8n+9)=0

We get rid of parentheses

7n-8n-9=0

We add all the numbers together, and all the variables

-1n-9=0

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

-n=9

n=9/-1

n=-9

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