5/9=15/x

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Solution for 5/9=15/x equation: 


D( x )

x = 0

x = 0

x = 0

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

5/9 = 15/x // - 15/x

5/9-(15/x) = 0

5/9-15*x^-1 = 0

-15*x^-1 = -5/9 // : -15

x^-1 = 1/27

-1 < 0

1/(x^1) = 1/27 // * x^1

1 = 1/27*x^1 // : 1/27

27 = x^1

x = 27

x = 27

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