Question

627. Вычислите: 311 8 12 6 1) 12 3 2) 3 6 5 12 5 18 3) 1 1 4 18 39 2 можно по действиям дам 100 бал​

Answer 1

Пошаговое объяснение:

№1

1) 3/8 + 1/12 + 1/6 = 9/24 + 2/24 + 4/24 = 15/24 = 5/8

2) 1/12 + 1/3 + 5/6 = 1/12 + 4/12 + 10/12 = 15/12 = 5/4

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

№2

1) 2/3 - 1/6 - 4/9 = 12/18 - 3/18 - 8/18 = 1/18

2) 7/9 - 5/12 - 5/18 = 28/36 - 15/36 - 10/36 = 3/36 = 1/12

3) 1/18 : 1/12 = 1/18 * 12/1 = 1/3 * 2/1 = 2/3