Привет! Сейчас мы все вместе вычислим.
- a) 3/15 + 7/15 = 3+7/15 = 10/15 = 2/3
- б) 9/14 - 7/14 = 9-7/14 = 2/14 = 1/7
- в) 4/9 * 3/8 = 4*3/9*8 = 12/72 = 1/6
- г) 5/6 : 10/12 = 5/6 * 12/10 = 5*12/6*10 = 60/60 = 1
- д) 22/3 + 15/6 = 8/3 + 11/6 = 16/6 + 11/6 = 27/6 = 43/6 = 41/2
- e) 41/3 - 27/9 = 13/3 - 25/9 = 39/9 - 25/9 = 14/9 = 15/9
- ж) 8/9 * 3/16 = 8*3/9*16 = 24/144 = 1/6
- з) 31/2 : 21/3 = 7/2 : 7/3 = 7/2 * 3/7 = 7*3/2*7 = 21/14 = 3/2 = 11/2
Ответ:
- a) 2/3
- б) 1/7
- в) 1/6
- г) 1
- д) 41/2
- e) 15/9
- ж) 1/6
- з) 11/2