1) 2/3; 3/4; 8/5; 5/7; 9/12
2) 4/17; 2/13; 1/9; 7/9; 5/31
3) 5/7; 11/13; 15/17; 1/5; 1/2
4) 3/19; 11/16; 7/12; 17/41; 21/40
Пошаговое объяснение:
1) 2/3; 3/4; 8/5; 5/7; 9/12
2) 4/17; 2/13; 1/9; 7/9; 5/31
3) 5/7; 11/13; 15/17; 1/5; 1/2
4) 3/19; 11/16; 7/12; 17/41; 21/40
Пошаговое объяснение: