解:设X-0.3=Z (1)Z+0.2Z/Z-0.1=0.6Z②+0.1Z=0.6Z-0.06Z②-0.5Z+0.06=0Z1=0.255Z2=0.245Z1代入(1)X-0.3=0.255 X1=0.555Z2代入(2)X-0.3=0.245 X2=0.545
