9=4n+n

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Solution for 9=4n+n equation: 



9=4n+n

We move all terms to the left:

9-(4n+n)=0

We add all the numbers together, and all the variables

-(+5n)+9=0

We get rid of parentheses

-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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