1/2{1/3[1/4(1/5x-1)-1]-1}=1
0.5{1/3[0.25(0.2x-1)-1]-1}=1
1/3[0.25(0.2x-1)-1]-1=2
1/3[0.25(0.2x-1)-1]=3
0.25(0.2x-1)-1=9
0.25(0.2x-1)=10
0.2x-1=40
0.2x=41
x=205
1/2{1/3[1/4(1/5x-1)-1]-1}=1
0.5{1/3[0.25(0.2x-1)-1]-1}=1
1/3[0.25(0.2x-1)-1]-1=2
1/3[0.25(0.2x-1)-1]=3
0.25(0.2x-1)-1=9
0.25(0.2x-1)=10
0.2x-1=40
0.2x=41
x=205