8/15=5/x

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Solution for 8/15=5/x equation: 


D( x )

x = 0

x = 0

x = 0

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

8/15 = 5/x // - 5/x

8/15-(5/x) = 0

8/15-5*x^-1 = 0

-5*x^-1 = -8/15 // : -5

x^-1 = 8/75

-1 < 0

1/(x^1) = 8/75 // * x^1

1 = 8/75*x^1 // : 8/75

75/8 = x^1

x = 75/8

x = 75/8

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