Ответ:

9/10 * 2/3=18/30

3/16 * 4/9=12/144

3/5 * 5/12=15/60

3/4 * 8/15=24/60

4/5 * 3/8=12/40

5/7 * 14/25=70/175

Ответ:

Пошаговое объяснение:

1) 9/10 * 2/3 = 18/30 = 3/5

2) 3/16 * 4/9 = 1/4 * 1/3 = 1/12

3) 3/5 * 5/12 = 3/12 = 1/4

4) 3/4 * 8/15 = 1/1 * 2/5 = 2/5

5) 4/5 * 3/8 = 12/40 = 3/10

6) 5/7 * 14/25 = 1/1 * 2/5 = 2/5