Question

490. Вычислите:
1,2
1) (1/4-2/3)•(4/5-2/15)•(-3/5
2)(1/6-5/9)•(1/2-3/7)•7 1/2

Answer 1

Ответ:

Пошаговое объяснение:

Answer 2

Пошаговое объяснение:

№1

1) 1/4 - 2/3 = 3/12 - 8/12 = -5/12

2) 4/5 - 2/15 = 12/15 - 2/15 = 10/15 = 2/3

3) -5/12 * 2/3 = -5/6 * 1/3 = -5/18

4) -5/18 * (-3/5) = -1/6 * (-1/1) = 1/6

№2

1) 1/6 - 5/9 = 3/18 - 10/18 = -7/18

2) 1/2 - 3/7 = 7/14 - 6/14 = 1/14

3) -7/18 * 1/14 = -1/18 * 1/2 = -1/36

4) -1/36 * 7 1/2 = -1/36 * 15/2 = -1/12 * 5/2 = -5/24