4n-15n-18n-12=9

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Solution for 4n-15n-18n-12=9 equation: 



4n-15n-18n-12=9

We move all terms to the left:

4n-15n-18n-12-(9)=0

We add all the numbers together, and all the variables

-29n-21=0

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

-29n=21

n=21/-29

n=-21/29

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