Odpowiedź:
8/3 × 7/6 = 56/18 = 28/9 = 3 1/9
10/3×5/3 = 50/9 = 5 5/9
15/4×3/2= 45/8 = 5 5/8
3/2 × 3/5 = 9/10 = 1 1/10
4/5× 6/7 = 24/35
9/20× 7/19 = 63/280