5/13=9/x

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Solution for 5/13=9/x equation: 


D( x )

x = 0

x = 0

x = 0

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

5/13 = 9/x // - 9/x

5/13-(9/x) = 0

5/13-9*x^-1 = 0

-9*x^-1 = -5/13 // : -9

x^-1 = 5/117

-1 < 0

1/(x^1) = 5/117 // * x^1

1 = 5/117*x^1 // : 5/117

117/5 = x^1

x = 117/5

x = 117/5

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