Odpowiedź:
1 i 3/5 : 1 i 4/7 = 8/5 : 11/7 = 8/5 * 7/11 = 56/55 = 1 i 1/55
2 i 1/5 : 3 i 4/5 = 11/5 : 19/5 = 11/5 * 5/19 = 11/19
1 i 1/7 : 1 i 1/7 = 8/7 : 8/7 = 8/7 * 7/8 = 1
(7/9)² = 7/9 * 7/9 = 49/81
(1/7)² = 1/7 * 1/7 = 1/49
(3/11)² = 3/11 * 3/11 = 9/121