9+8n=7n-1

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Solution for 9+8n=7n-1 equation: 



9+8n=7n-1

We move all terms to the left:

9+8n-(7n-1)=0

We get rid of parentheses

8n-7n+1+9=0

We add all the numbers together, and all the variables

n+10=0

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

n=-10

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