13/19=9/x

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Solution for 13/19=9/x equation: 


D( x )

x = 0

x = 0

x = 0

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

13/19 = 9/x // - 9/x

13/19-(9/x) = 0

13/19-9*x^-1 = 0

-9*x^-1 = -13/19 // : -9

x^-1 = 13/171

-1 < 0

1/(x^1) = 13/171 // * x^1

1 = 13/171*x^1 // : 13/171

171/13 = x^1

x = 171/13

x = 171/13

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