9n+5=4n-15

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Solution for 9n+5=4n-15 equation: 



9n+5=4n-15

We move all terms to the left:

9n+5-(4n-15)=0

We get rid of parentheses

9n-4n+15+5=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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