4x/x-5=(20/x-5)+7

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Solution for 4x/x-5=(20/x-5)+7 equation: 


D( x )

x = 0

x = 0

x = 0

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

(4*x)/x-5 = 20/x-5+7 // - 20/x-5+7

(4*x)/x-(20/x)-7-5+5 = 0

(4*x)/x-20*x^-1-7-5+5 = 0

-20*x^-1 = 3 // : -20

x^-1 = -3/20

-1 < 0

1/(x^1) = -3/20 // * x^1

1 = -3/20*x^1 // : -3/20

-20/3 = x^1

x = -20/3

x = -20/3

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