(x+3)/(x-6)=4

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Solution for (x+3)/(x-6)=4 equation: 


D( x )

x-6 = 0

x-6 = 0

x-6 = 0

x-6 = 0 // + 6

x = 6

x in (-oo:6) U (6:+oo)

(x+3)/(x-6) = 4 // - 4

(x+3)/(x-6)-4 = 0

(x+3)/(x-6)+(-4*(x-6))/(x-6) = 0

x-4*(x-6)+3 = 0

27-3*x = 0

(27-3*x)/(x-6) = 0

(27-3*x)/(x-6) = 0 // * x-6

27-3*x = 0

27-3*x = 0 // - 27

-3*x = -27 // : -3

x = -27/(-3)

x = 9

x = 9

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