20/x=4/5

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Solution for 20/x=4/5 equation: 


D( x )

x = 0

x = 0

x = 0

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

20/x = 4/5 // - 4/5

20/x-(4/5) = 0

20/x-4/5 = 0

20*x^-1 = 4/5 // : 20

x^-1 = 1/25

-1 < 0

1/(x^1) = 1/25 // * x^1

1 = 1/25*x^1 // : 1/25

25 = x^1

x = 25

x = 25

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