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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