二分之一-0.16+三分之一-0.24+六分之一-0.6+十二分之一
1/2 - 0.16+1/3-0.24+1/6-0.6+1/12
=(1/2+1/3+1/6+1/12)-(0.16+0.24+0.6)
=(6+4+2+1)/12 - (0.4+0.6)
=13/12 - 1
=1/12
1/2 - 0.16+1/3-0.24+1/6-0.6+1/12
=(1/2+1/3+1/6+1/12)-(0.16+0.24+0.6)
=(6+4+2+1)/12 - (0.4+0.6)
=13/12 - 1
=1/12