4n+n=9

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Solution for 4n+n=9 equation: 



4n+n=9

We move all terms to the left:

4n+n-(9)=0

We add all the numbers together, and all the variables

5n-9=0

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

5n=9

n=9/5

n=1+4/5

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