1) 16/24 + 15/24 = 31/24 = 1 целая 7/24
2) 14/24 - 9/24 = 5/24
3) 11/16 - 10/16 = 1/16
4) 12/70 + 21/70 = 33/70
5) 24/45 - 20/45 = 4/45
6) 32/60 + 35/60 = 67/60= 1 целая 7/60
7) 33/144 - 20/144 = 13/144
8) 12/15 - 10/15 + 4/15 = 6/15 = 2/5
9) 21/24 + 22/24 - 20/24 = 23/24