1. Вычислите: 1) 3/4 + 1/ 1311+1 15 2. Вычислите: 12 4 5 2) 2 1/7.5 1) 1 ВАРИАНТ 5 2) 10-72-3-24 3) 3 1/2. 21/06 4 4) 5-1-1-²/ 9 3) 12-7/2/12 13 4) 103 - 18 16 5)23: 6 6)61:33 50балов даю​

Пошаговое объяснение:

3 4/15 + 1 1/5 = 3 4/15 + 1 3/15 = 4 7/15

10 7/12 - 3 5/24 = 10 14/24 - 3 5/24 = 7 9/24 = 7 3/8

12 - 7 9/22 = 11 22/22 - 7 9/22 = 4 13/22

10 3/8 - 13/16 = 10 6/16 - 13/16 = 9 22/16 - 13/16 = 9 9/16

1/4 * 2/5 = 2/20 = 1/10

2 1/7 * 5 = 15/7 * 5 = 75/7 = 10 5/7

3 1/4 * 1/26 = 13/4 * 1/26 = 1/4 * 1/2 = 1/8

5 1/3 * 1 2/3 = 16/3 * 5/3 = 80/9 = 8 8/9

2 1/2 : 6 = 5/2 * 1/6 = 5/12

6 4/5 : 3 2/5 = 34/5 : 17/5 = 34/5 * 5/17 = 2/1 * 1/1 = 2/1 = 2