4/x=20/75

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Solution for 4/x=20/75 equation: 


D( x )

x = 0

x = 0

x = 0

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

4/x = 20/75 // - 20/75

4/x-(20/75) = 0

4/x-4/15 = 0

4*x^-1 = 4/15 // : 4

x^-1 = 1/15

-1 < 0

1/(x^1) = 1/15 // * x^1

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

15 = x^1

x = 15

x = 15

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