(1)/(1-x)=2

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Solution for (1)/(1-x)=2 equation: 


D( x )

1-x = 0

1-x = 0

1-x = 0

1-x = 0 // - 1

-x = -1 // * -1

x = 1

x in (-oo:1) U (1:+oo)

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

1/(1-x)-2 = 0

1/(1-x)+(-2*(1-x))/(1-x) = 0

1-2*(1-x) = 0

2*x-1 = 0

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

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

2*x-1 = 0

2*x-1 = 0 // + 1

2*x = 1 // : 2

x = 1/2

x = 1/2

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