7/16-5/24=21/48-10/48=11/48
2/11-1/12=24/132-11/132=13/132
12/13-15/26=24/26-15/26=9/26
9/28-11/35=45/140-44/140=1/140
39/40-19/28=273/280-190/280=83/280
7/16-5/24=21/48-10/48=11/48
2/11-1/12=24/132-11/132=13/132
12/13-15/26=24/26-15/26=9/26
9/28-11/35=45/140-44/140=1/140
39/40-19/28=273/280-190/280=83/280