Question

596. Найдите значение выражения
1. Одна целых 1/2 x 1 1/3 x 1 1/3 умножить 1/4 x 1 1/5 х 1/6 - 1/2
Мне нужно все 4

Answer 1

Пошаговое объяснение:

№1

1 1/2 * 1 1/3 * 1 1/4 * 1 1/5 * 1 1/6 - 1/2 =

3/2 * 4/3 * 5/4 * 6/5 * 7/6 - 1/2 =

1/1 * 2/1 * 1/2 * 3/1 * 7/6 - 1/2 =

1/1 * 1/1 * 1/1 * 1/1 * 7/2 - 1/2 =

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

№2

1 1/4 * 1 1/5 * 1 1/6 * 1 1/7 * 1 1/8 - 1/4 =

5/4 * 6/5 * 7/6 * 8/7 * 9/8 - 1/4 =

1/2 * 3/1 * 1/3 * 4/1 * 9/8 - 1/4 =

1/2 * 1/1 * 1/1 * 1/1 * 9/2 - 1/4 =

9/4 - 1/4 = 8/4 = 2

№3

2 1/2 * 1 2/5 * 1 2/7 * 1 2/9 * 1 2/11 + 1/2 =

5/2 * 7/5 * 9/7 * 11/9 * 13/11 + 1/2 =

1/2 * 7/1 * 1/7 * 11/1 * 13/11 + 1/2 =

1/2 * 1/1 * 1/1 * 1/1 * 13/1 + 1/2 =

13/2 + 1/2 = 14/2 = 7

№4

2 1/3 * 1 4/7 * 1 4/11 * 1 4/15 * 1 4/19 - 2/3 =

7/3 * 11/7 * 15/11 * 19/15 * 23/19 - 2/3 =

1/3 * 11/1 * 1/11 * 19/1 * 23/19 - 2/3 =

1/3 * 1/1 * 1/1 * 1/1 * 23/1 - 2/3 =

23/3 - 2/3 = 21/3 = 7