9n-n=4

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Solution for 9n-n=4 equation: 



9n-n=4

We move all terms to the left:

9n-n-(4)=0

We add all the numbers together, and all the variables

8n-4=0

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

8n=4

n=4/8

n=1/2

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