-4/0.8=2/x-1

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Solution for -4/0.8=2/x-1 equation: 


D( x )

x = 0

x = 0

x = 0

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

-4/0.8 = 2/x-1 // - 2/x-1

1-(2/x)-4/0.8 = 0

1-2*x^-1-4/0.8 = 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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