3/n=21

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Solution for 3/n=21 equation: 


D( n )

n = 0

n = 0

n = 0

n in (-oo:0) U (0:+oo)

3/n = 21 // - 21

3/n-21 = 0

3*n^-1 = 21 // : 3

n^-1 = 7

-1 < 0

1/(n^1) = 7 // * n^1

1 = 7*n^1 // : 7

1/7 = n^1

n = 1/7

n = 1/7

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