Question

пж помогите решить,даю 100 баллов
14/25 * 10/21=
6 * 2 1/3=
2/9 * 3/8=
3/7 * 21=
3 1/5 * 15/24=
27* (2/3)²*1 7/8=
(3/5+1/7)*35=

Answer 1

Пошаговое объяснение:

14/25 * 10/21 = 2/5 * 2/3 = (2*2)/(5*3) = 4/15

6 * 2 1/3 = 6 * 7/3 = (6*7)/3 = 42/3 = 14

2/9 * 3/8 = 1/3 * 1/4 = (1*1)/(3*4) = 1/12

3/7 * 21 = (3*21)/7 = 63/7 = 9

3 1/5 * 15/24 = 16/5 * 15/24 = 2/1 * 3/3 = 2/1 * 1 = 2/1 = 2

27 * (2/3)² * 1 7/8 = 27 * 4/9 * 15/8 = 27 * 1/3 * 5/2 = 27 * 5/6 = 9 * 5/2 = 45/2 = 22 1/2

(3/5 + 1/7) * 35 = (21/35 + 5/35) * 35 = 26/35 * 35 = 26/1 * 1 = 26/1 = 26