(4x)/(x-1)=13

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Solution for (4x)/(x-1)=13 equation: 


D( x )

x-1 = 0

x-1 = 0

x-1 = 0

x-1 = 0 // + 1

x = 1

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

(4*x)/(x-1) = 13 // - 13

(4*x)/(x-1)-13 = 0

(4*x)/(x-1)+(-13*(x-1))/(x-1) = 0

4*x-13*(x-1) = 0

13-9*x = 0

(13-9*x)/(x-1) = 0

(13-9*x)/(x-1) = 0 // * x-1

13-9*x = 0

13-9*x = 0 // - 13

-9*x = -13 // : -9

x = -13/(-9)

x = 13/9

x = 13/9

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