(-2x+1)*(-3x+1)

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(-2x+1)*(-3x+1)

(-2x+1)*(-3x+1)
(-2x+1)*(-3x+1)

(-2x+1)*(-3x+1)
(2x-1)*(3x-1)

(-2x+1)*(-3x+1)<0
[-1*(2x-1)](-3x+1)<0
(2x-1)*[-1*(-3x+1)]<0
(2x-1)(3x-1)<0
两边除以6
(2x-1)/2*(3x-1)/3<0
(x-1/2)(x-1/3)<0
相乘小于0则一正一负
-1/2<-1/3
所以x-1/2所以x-1/2<0,x-1/3>0
所以1/3

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