(2x-18)/(x-18)=3

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Solution for (2x-18)/(x-18)=3 equation: 


D( x )

x-18 = 0

x-18 = 0

x-18 = 0

x-18 = 0 // + 18

x = 18

x in (-oo:18) U (18:+oo)

(2*x-18)/(x-18) = 3 // - 3

(2*x-18)/(x-18)-3 = 0

(2*x-18)/(x-18)+(-3*(x-18))/(x-18) = 0

2*x-3*(x-18)-18 = 0

36-x = 0

(36-x)/(x-18) = 0

(36-x)/(x-18) = 0 // * x-18

36-x = 0

36-x = 0 // - 36

-x = -36 // * -1

x = 36

x = 36

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