Question

решите даю 60 баллов​

Answer 1

Ответ:

Пошаговое объяснение:

1.

1) 4/9 : 1/3 = 4/9 * 3/1 = 12/9 = 4/3 = 1. 1/3

2) 16/25 : 4/15 = 16/25 * 15/4 = 4/5 * 3/1 = 12/5 = 2. 2/5

3) 5/8 : 1/2 = 5/8 * 2/1 = 10/8 = 5/4 = 1. 1/4

2.

1) 2. 2/3 : 1. 1/7 = 8/3 : 8/7 = 8/3 * 7/8 = 7/3 = 2. 1/3

2) 5. 3/7 : 2. 3/8 = 38/7 : 19/8 = 38/7 * 8/19 = 2/7 * 8/1 = 16/7 = 2. 2/7

3) 3. 3/5 : 2. 2/5 = 18/5 : 12/5 = 18/5 * 5/12 = 18/12 = 3/2 =

1. 1/2

3.

34. 2/3 : 4/15 = 104/3 : 4/15 = 104/3 * 15/4 = 26/1 * 5/1 = 130/1 = 130 (км/ч) - скорость поезда