(4/5)/x=20

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Solution for (4/5)/x=20 equation: 


D( x )

x = 0

x = 0

x = 0

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

(4/5)/x = 20 // - 20

(4/5)/x-20 = 0

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

x^-1 = 25

-1 < 0

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

1 = 25*x^1 // : 25

1/25 = x^1

x = 1/25

x = 1/25

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