9n+-12n+-2n=20

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Solution for 9n+-12n+-2n=20 equation: 



9n+-12n+-2n=20

We move all terms to the left:

9n+-12n+-2n-(20)=0

determiningTheFunctionDomain
9n-12n-2n-20++=0

We add all the numbers together, and all the variables

-5n=0

n=0/-5

n=0

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