七年级下册数学分式解方程

1) (x-3)/(x-2)+1=3/(2-x)
(x-3)/(x-2)+1=-3/(x-2)
两边同乘 (x-2) 得
x-3+x-2= -3
2x=2
x=1
2) 1-1/(x-1)=2x/(1-x)
1-1/(x-1)=-2x/(x-1)
两边同乘 (x-1) 得
x-1-1=-2x
3x=2
x=2/3