Решить
5/6 * 1 6/5 , 3 1/9 * 3/8 , 9 1/7 * 3/4 , 10 1/5 * 10/17 , 3/11 * 5 1/2
буду

5/6 · 1 6/5 = 5/6 · 11/5 = 11/6 = 1 целая 5/6

3 1/9 · 3/8 = 28/9 · 3/8 = (7·1)/(3·2) = 7/6 = 1 целая 1/6

9 1/7 · 3/4 = 64/7 · 3/4 = (16·3)/(7·1) = 48/7 = 6 целых 6/7

10 1/5 · 10/17 = 51/5 · 10/17 = (3·2)/(1·1) = 6

3/11 · 5 1/2 = 3/11 · 11/2 = 3/2 = 1 целая 1/2