1/2-1/x=3

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Solution for 1/2-1/x=3 equation: 


D( x )

x = 0

x = 0

x = 0

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

1/2-(1/x) = 3 // - 3

1/2-(1/x)-3 = 0

1/2-x^-1-3 = 0

-1*x^-1 = 5/2 // : -1

x^-1 = -5/2

-1 < 0

1/(x^1) = -5/2 // * x^1

1 = -5/2*x^1 // : -5/2

-2/5 = x^1

x = -2/5

x = -2/5

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