8=(2x)/(1-x)

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Solution for 8=(2x)/(1-x) 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)

8 = (2*x)/(1-x) // - (2*x)/(1-x)

8-((2*x)/(1-x)) = 0

8-2*x*(1-x)^-1 = 0

(-2*x)/(1-x)+8 = 0

(-2*x)/(1-x)+(8*(1-x))/(1-x) = 0

8*(1-x)-2*x = 0

8-10*x = 0

(8-10*x)/(1-x) = 0

(8-10*x)/(1-x) = 0 // * 1-x

8-10*x = 0

8-10*x = 0 // - 8

-10*x = -8 // : -10

x = -8/(-10)

x = 4/5

x = 4/5

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