Question

помогите с 9.30 и 9.31 (5 класс)

Answer 1

РЕШЕНИЕ
9.30
1) 11/21 * 35/31 = 5/9
2) 28/33 * 11/21 = 4/9
3) 15/44 * 11/21 * 28/45 = 1/9
4) 11/21 * 3/8 *63/22 = 9/16

9.31.
1)4/15 * 15/16 = 1/4
2)25/36 * 9/25 = 1/4
3) 27/80 * 20/27 = 1/4
4) 9/25 * 25/36 = 1/4