1) 5 3/7 - 2 2/3 = 5 9/21 - 2 14/21 = 4 30/21 - 2 14/21 = 2 16/21
2) 2 16/21 * 21 = 58/21 * 21 = 58
Ответ: 58
1) 5 3/7 - 2 2/3 = 5 9/21 - 2 14/21 = 4 30/21 - 2 14/21 = 2 16/21
2) 2 16/21 * 21 = 58/21 * 21 = 58
Ответ: 58