22/20=99/x

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Solution for 22/20=99/x equation: 


D( x )

x = 0

x = 0

x = 0

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

22/20 = 99/x // - 99/x

22/20-(99/x) = 0

22/20-99*x^-1 = 0

-99*x^-1 = -11/10 // : -99

x^-1 = 1/90

-1 < 0

1/(x^1) = 1/90 // * x^1

1 = 1/90*x^1 // : 1/90

90 = x^1

x = 90

x = 90

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