a) 1 - 8/15 = 15/15 - 8/15 = 15-8/15=7/15

б) 3 -2/11 = 2 11/11 - 2/11 = 2 11-2/11 = 2 9/11

в) 4 - 3 4/9 = 3 9/9 - 3 4/9 = 9-4/9 = 5/9

г) 7 3/8 -5 = 59/8 - 4 8/8 = 59/8 - 40/8 = 19/8 = 2 3/8, либо проще, 7 3/8 - 5 = 7-5 3/8 = 2 3/8

д) 45 - 44 3/8 = 44 8/8 - 44 3/8 = 8-3/8 = 5/8

е) 6 7/15 - 31/5 = 6 7/15 - 3 3/15 = 3 7-3/15 = 3 4/15

ж) 10 3/23 - 7 19/46 = 10 6/46 - 7 19/46 = 466/46 - 341/46 = 125/46 = 2 33/46

з) 16 2/5 (тут очень плохо видно знаменатель, возможно решение будет не верным, проверь) - 4 3/7 = 16 14/30 - 4 15/30 = 482/30 - 135/30 = 347/30 = 11 17/30

и) 19 5/12 - 8 17/18 = 19 15/36 - 8 34/36 = 699/36 - 322/36 = 377/36 = 10 17/36