1/x=21

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Solution for 1/x=21 equation: 


D( x )

x = 0

x = 0

x = 0

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

1/x = 21 // - 21

1/x-21 = 0

1*x^-1 = 21 // : 1

x^-1 = 21

-1 < 0

1/(x^1) = 21 // * x^1

1 = 21*x^1 // : 21

1/21 = x^1

x = 1/21

x = 1/21

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