解不等式 1/(1-x)>-2,

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解不等式 1/(1-x)>-2,

1/(1-x)+2(1-x)/(1-x)>0
(3-2x)/(1-x)>0
(3-2x)(1-x)>0
(2x-3)(x-1)>0
1

1/(1-x)>-2
1-x>-2(1-x)
1-x>-2+x
2x<3
x<3/2


1/(1-x)>-2
1/(1-x)+2>0
1/(1-x)+2(1-x)/(1-x)>0
(3-2x)/(1-x)>0
(3-2x)(1-x)>0
(2x-3)(x-1)>0
x<1或x>3/2