Вычислите 2/3+5/8,7/12-3/8,11/16-5/8,5/35+3/10,8/15-4/9,4/15+7/12,11/48-5/36,4/5-2/3+4/15,7/8+11/12-5/6

31/24 5/24 1/16 31/70 4/45 17/20 13/144 2/5 23/24

Приводим к общему знаменателю и вычисляем. 2/3 + 5/8 = 16/24 + 15/24 = 31/24 7/12 - 3/8 = 14/24 - 9/24 = 5/24 11/16 - 5/8 = 11/16-10/16 = 1/16 5/35 + 3/10 = 10/70 + 21/70 = 31/70 8/15 - 4/9 = 24/45 - 20/45 =  4/45 4/15 + 7/12 = 16/60 + 35/60 = 51/60 11/48 - 5/36 = 33/144 - 20/144 = 13/144 4/5 - 2/3 + 4/15 = 12/15 - 10/15 + 4/15 = 6/15 7/8 + 11/12 - 5/6 = 21/24 + 22/24 - 20/24 = 23/24