(5/x)-(3/4x)/(4/7x)-(1/x)

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Solution for (5/x)-(3/4x)/(4/7x)-(1/x) equation: 


D( x )

(4/7)*x = 0

x = 0

(4/7)*x = 0

(4/7)*x = 0

4/7*x = 0 // : 4/7

x = 0

x = 0

x = 0

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

5/x-(1/x)-(((3/4)*x)/((4/7)*x)) = 0

5/x-x^-1-21/16 = 0

4*x^-1 = 21/16 // : 4

x^-1 = 21/64

-1 < 0

1/(x^1) = 21/64 // * x^1

1 = 21/64*x^1 // : 21/64

64/21 = x^1

x = 64/21

x = 64/21

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