5/x=7/x-4

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Solution for 5/x=7/x-4 equation: 


D( x )

x = 0

x = 0

x = 0

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

5/x = 7/x-4 // - 7/x-4

5/x-(7/x)+4 = 0

5/x-7*x^-1+4 = 0

-2*x^-1 = -4 // : -2

x^-1 = 2

-1 < 0

1/(x^1) = 2 // * x^1

1 = 2*x^1 // : 2

1/2 = x^1

x = 1/2

x = 1/2

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