Question

даю 100 баллов клянусь​

Answer 1

Ответ:

1)240/3240

2)980/10080

3)480/1800

4)2970/42240

Answer 2

Пошаговое объяснение:

1)

2/3 * 1/4 * 3/5 * 5/6 * 8/9 =

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

(1*1*1*1*8)/(3*2*1*2*9) = 8/108 = 2/27

2)

0,4 * 7/8 * 5/14 * 7/9 =

4/10 * 7/8 * 5/14 * 7/9 =

1/10 * 7/2 * 5/2 * 1/9 =

(1*7*5*1)/(10*2*2*9) = 35/360 = 7/72

3)

4/5 * 3/4 * 5/6 * 8/15 =

1/5 * 3/1 * 1/3 * 4/3 =

(1*3*1*4)/(5*1*3*3) = 12/45 = 4/15

4)

11/24 * 9/22 * 0,6 * 5/8 =

11/24 * 9/22 * 6/10 * 5/8 =

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

(1*3*3*1)/(8*2*2*4) = 9/128