3/9n=21

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Solution for 3/9n=21 equation: 



3/9n=21

We move all terms to the left:

3/9n-(21)=0



Domain of the equation: 9n!=0

n!=0/9

n!=0

n∈R



We multiply all the terms by the denominator


-21*9n+3=0

Wy multiply elements

-189n+3=0

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

-189n=-3

n=-3/-189

n=1/63

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