(6x+6)/(x-1)=12

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Solution for (6x+6)/(x-1)=12 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)

(6*x+6)/(x-1) = 12 // - 12

(6*x+6)/(x-1)-12 = 0

(6*x+6)/(x-1)+(-12*(x-1))/(x-1) = 0

6*x-12*(x-1)+6 = 0

18-6*x = 0

(18-6*x)/(x-1) = 0

(18-6*x)/(x-1) = 0 // * x-1

18-6*x = 0

18-6*x = 0 // - 18

-6*x = -18 // : -6

x = -18/(-6)

x = 3

x = 3

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