I think we have
18 / (x^2-3x) - 6/(x-3) = 5/x
18 / [ x (x - 3) ] - 6 / (x - 3) = 5/ x the LCD is x(x-3)
Multiplying through by the LCD produces
18 - 6x = 5 ( x - 3)
18 - 6x = 5x - 15 add 6x, 15 to both sides
33 = 11x divide both sides by 11
3 = x thus.......there is no solution since this value for x makes an original denominator = 0