4n-20=9n

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Solution for 4n-20=9n equation: 



4n-20=9n

We move all terms to the left:

4n-20-(9n)=0

We add all the numbers together, and all the variables

-5n-20=0

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

-5n=20

n=20/-5

n=-4

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