Пошаговое объяснение:
а)
7. 1/8 : 4. 3/4 * 8 =
57/8 : 19/4 * 8 =
57/8 * 4/19 * 8 =
3/2 * 1/1 * 8 = 3/2 * 8 =
24/2 = 12
б)
11. 1/3 : 4/21 : 4. 1/4 =
34/3 : 4/21 : 17/4 =
34/3 * 21/4 * 4/17 =
17/1 * 7/2 * 4/17 =
17/1 * 4/17 * 7/2 = 4/1 * 7/2 = 28/2 = 14
в)
1. 7/9 * 2. 2/5 : 1. 3/5 =
16/9 * 12/5 : 8/5 =
16/9 * 12/5 * 5/8 =
16/9 * 12/8 = 2/3 * 4/1 = 8/3 = 2. 2/3
г)
7/8 * 8/9 : 1. 1/9 =
7/8 * 8/9 : 10/9 =
7/8 * 8/9 * 9/10 =
7/9 * 9/10 = 7/10
Пошаговое объяснение:
а)
7. 1/8 : 4. 3/4 * 8 =
57/8 : 19/4 * 8 =
57/8 * 4/19 * 8 =
3/2 * 1/1 * 8 = 3/2 * 8 =
24/2 = 12
б)
11. 1/3 : 4/21 : 4. 1/4 =
34/3 : 4/21 : 17/4 =
34/3 * 21/4 * 4/17 =
17/1 * 7/2 * 4/17 =
17/1 * 4/17 * 7/2 = 4/1 * 7/2 = 28/2 = 14
в)
1. 7/9 * 2. 2/5 : 1. 3/5 =
16/9 * 12/5 : 8/5 =
16/9 * 12/5 * 5/8 =
16/9 * 12/8 = 2/3 * 4/1 = 8/3 = 2. 2/3
г)
7/8 * 8/9 : 1. 1/9 =
7/8 * 8/9 : 10/9 =
7/8 * 8/9 * 9/10 =
7/9 * 9/10 = 7/10