3=4/x-5

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Solution for 3=4/x-5 equation: 


D( x )

x = 0

x = 0

x = 0

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

3 = 4/x-5 // - 4/x-5

3-(4/x)+5 = 0

3-4*x^-1+5 = 0

-4*x^-1 = -8 // : -4

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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