x/(1-x)=18/28

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Solution for x/(1-x)=18/28 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)

x/(1-x) = 18/28 // - 18/28

x/(1-x)-(18/28) = 0

x/(1-x)-9/14 = 0

(14*x)/(14*(1-x))+(-9*(1-x))/(14*(1-x)) = 0

14*x-9*(1-x) = 0

23*x-9 = 0

(23*x-9)/(14*(1-x)) = 0

(23*x-9)/(14*(1-x)) = 0 // * 14*(1-x)

23*x-9 = 0

23*x-9 = 0 // + 9

23*x = 9 // : 23

x = 9/23

x = 9/23

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