(3x-x)/(x-2)÷x(x-1)/(x+2)(x-2)=4
2x/(x-2)*(x+2)(x-2)/x(x-1)=4
2(x+2)/(x-1)=4
两边乘x-1
2x+4=4x-4
2x=8
x=2
经检验,x=2时分母x-2=0
是增根,舍去
所以方程无解