1. 10 5/18-5 8/27=5 (15-16/54)=5 (-1/54)=4 53/54
2. 25 7/32-21 1/24=4 (42/192-8/192)= =4 34/192=4 17/96
3. 32 8/21-23 7/15=9 (120-147/315)=
=9 (-27/315)=8 288/315=24 32/35
4. 19 7/20-9 1/30=10 (21-2/60)=10 19/60
5. 41 9/28-22 29/35=19(45-116/140)=
=19 (-71/140)=18 69/140
6. 73 5/24-58 19/36=15 (15-38/72)=
=15 (-23/72)=14 49/72
7. 58 11/20-22 29/35=36 (77-116/140)=
=36 (-39/140)=35 101/140
8. 91 37/54-47 11/45=44 (185-66/270)=
=44 119/270