8n-4=9n

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Solution for 8n-4=9n equation: 



8n-4=9n

We move all terms to the left:

8n-4-(9n)=0

We add all the numbers together, and all the variables

-1n-4=0

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

-n=4

n=4/-1

n=-4

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