15=75/x

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Solution for 15=75/x equation: 


D( x )

x = 0

x = 0

x = 0

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

15 = 75/x // - 75/x

15-(75/x) = 0

15-75*x^-1 = 0

-75*x^-1 = -15 // : -75

x^-1 = 1/5

-1 < 0

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

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

5 = x^1

x = 5

x = 5

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