Выполните действия: 2 : 1/4 + ((1 1/2 + 2 2/3) - вопрос №354872121411222333423889 от eugenetroyan 16.05.2022 13:34

Question

Математика: Выполните действия: 2 : 1/4 + ((1 1/2 + 2 2/3) : 3 3/4 - 2/3) : 8 8/9 =

eugenetroyan · Answer

2 : 1/4 + ((1 1/2 + 2 2/3) : 3 3/4 - 2/3) : 8 8/9 = 8 1/20

1) 1 1/2 + 2 2/3 = 1 3/6 + 2 4/6 = 3 7/6 = 4 1/6
2) 4 1/6 : 3 3/4 = 25/6 : 15/4 = 25/6 * 4/15 = 10/9 = 1 1/9
3) 1 1/9 - 2/3 = 10/9 - 6/9 = 4/9
4) 2 : 1/4 = 2 * 4/1 = 8
5) 4/9 : 8 8/9 = 4/9 : 80/9 = 4/9 * 9/80 = 4/80 = 1/20
6) 8 + 1/20 = 8 1/20