Question

Сделайте пожалуйста дам высокий бал!!!60б​

Answer 1

Пошаговое объяснение:

№1

14/39 : 21/52 = 14/39 * 52/21 = 2/3 * 4/3 = 8/9

4 1/11 : 2 19/22 = 45/11 : 63/22 = 45/11 * 22/63 = 5/1 * 2/7 = 10/7 = 1 3/7

18 : 9/14 = 18 * 14/9 = 2 * 14/1 = 28/1 = 28

№2

1) 7 1/3 + 2 1/4 = 7 4/12 + 2 3/12 = 9 7/12

2) 9 7/12 : 1/4 = 115/12 * 4/1 = 115/3 * 1/1 = 115/3 = 38 1/3

3) 38 1/3 - 30 5/6 = 38 2/6 - 30 5/6 = 37 8/6 - 30 5/6 = 7 3/6 = 7 1/2