Пошаговое объяснение:
1) 2 - 1. 11/21 = 1. 21/21 - 1. 11/21 = 10/21
2) 10/21 : 4/9 = 10/21 * 9/4 = 5/7 * 3/2 = 15/14 = 1. 1/14
3) 3/4 + 1. 1/14 = 21/28 + 1. 2/28 = 1. 23/28
4) 1. 23/28 - 1. 4/7 = 1. 23/28 - 1. 16/28 = 7/28 = 1/4
ответ: 1/4
1/4
1) 2 - 1 11/21 = 10/21
2) 10/21 : 4/9 = 10/21 * 9/4 = 15/14 = 1 1/14
3) 3/4 + 1 1/14 = 21/28 + 1 2/28 = 1 23/28
4) 1 23/28 - 1 4/7 = 1 23/28 - 1 16/28 = 7/28 = 1/4
Пошаговое объяснение:
1) 2 - 1. 11/21 = 1. 21/21 - 1. 11/21 = 10/21
2) 10/21 : 4/9 = 10/21 * 9/4 = 5/7 * 3/2 = 15/14 = 1. 1/14
3) 3/4 + 1. 1/14 = 21/28 + 1. 2/28 = 1. 23/28
4) 1. 23/28 - 1. 4/7 = 1. 23/28 - 1. 16/28 = 7/28 = 1/4
ответ: 1/4
1/4
Пошаговое объяснение:
1) 2 - 1 11/21 = 10/21
2) 10/21 : 4/9 = 10/21 * 9/4 = 15/14 = 1 1/14
3) 3/4 + 1 1/14 = 21/28 + 1 2/28 = 1 23/28
4) 1 23/28 - 1 4/7 = 1 23/28 - 1 16/28 = 7/28 = 1/4