(x-3分之x)+(x^2-3x分之x+6)=x分之x-3
x/(x-3) + (x+6)/x(x-3) = (x-3)/x
两边同乘以 x(x-3)
x²+x+6=x²-6x+9
7x=3
x=3/7 .x等于7分之3
经检验x=3/7是方程的根.