-3=12/n-9

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Solution for -3=12/n-9 equation: 



-3=12/n-9

We move all terms to the left:

-3-(12/n-9)=0



Domain of the equation: n-9)!=0

n∈R



We get rid of parentheses

-12/n+9-3=0

We multiply all the terms by the denominator


9*n-3*n-12=0

We add all the numbers together, and all the variables

6n-12=0

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

6n=12

n=12/6

n=2

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