解的X=32158
1/2{1/2[1/2(1/2X-1)-1]-1}-1=20081/2{1/2[1/2(1/2X-1)-1]-1}=20091/2[1/2(1/2X-1)-1]-1=40181/2[1/2(1/2X-1)-1]=40191/2(1/2X-1)-1=80381/2(1/2X-1)=80391/2X-1=160781/2X=16079X=32158