9n=4n-20

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Solution for 9n=4n-20 equation: 



9n=4n-20

We move all terms to the left:

9n-(4n-20)=0

We get rid of parentheses

9n-4n+20=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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