14/21=21/x

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Solution for 14/21=21/x equation: 


D( x )

x = 0

x = 0

x = 0

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

14/21 = 21/x // - 21/x

14/21-(21/x) = 0

14/21-21*x^-1 = 0

-21*x^-1 = -2/3 // : -21

x^-1 = 2/63

-1 < 0

1/(x^1) = 2/63 // * x^1

1 = 2/63*x^1 // : 2/63

63/2 = x^1

x = 63/2

x = 63/2

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