Question

Помогите пожалуйста.выполните деление 447: 5/7×7/12:5/16; 9/10:5/11×50/21; 2/9×3/7:5/21; 7/25:3/10×5/6.

Answer 1

Пошаговое объяснение:

447 : 5/7 * 7/12 : 5/16 = 447 * 7/5 * 7/12 * 16/5 =

(447*7)/5 * (7/12 * 16/5) = 3129/5 * (7/3 * 4/5) =

3129/5 * 28/15 = 1043/5 * 28/5 = 29204/25 =

1168 4/25

9/10 : 5/11 * 50/21 = 9/10 * 11/5 * 50/21 =

9/10 * 11/1 * 10/21 = (9/10 * 10/21) * 11/1 =

(3/1 * 1/7) * 11/1 = 3/7 * 11/1 = 33/7 = 4 5/7

2/9 * 3/7 : 5/21 = 2/3 * 1/7 * 21/5 = 2/21 * 21/5 = 2/5

7/25 : 3/10 * 5/6 = 7/25 * 10/3 * 5/6 =

7/5 * 2/3 * 5/6 = 14/15 * 5/6 = 7/3 * 1/3 = 7/9