(1-x)/(x-2)=1/(2-x)
x-2=(1-x)(2-x)
(1-x)(2-x)-(x-2)=0
(1-x+1)(2-x)=0
x=2
但原方程式分母上不能为0,所以方程无解
解:
(1-x)/(x-2)+2=1/(2-x)
(1-x)/(x-2)-1/(2-x)=-2
(1-x)/(x-2)+1/(x-2)=-2
(2-x)/(x-2)=-2
2-x=-2(x-2)=-2x+4
-x+2x=4-2
x=2
检验:当x=2时,分母x-2=0无意义,为增根
所以原方程无解
解:(1-x)/(x-2)+2=1/(2-x)
(1-x)/(x-2)-1/(2-x)=-2
(1-x)/(x-2)+1/(x-2)=-2
(2-x)/(x-2)=-2
2-x=-2(x-2)=-2x+4
-x+2x=4-2
x=2
原方程无解
望采纳,谢谢