Пошаговое объяснение:
3/14 + 5/14 = 8/14 = 4/7
7/15+2/15 =9/15 = 3/5
5/18+4/18 = 9/18 = 1/2
13/54+5/54 = 18/54 = 1/3
Пошаговое объяснение:
3/14 + 5/14 = 8/14 = 4/7
7/15+2/15 =9/15 = 3/5
5/18+4/18 = 9/18 = 1/2
13/54+5/54 = 18/54 = 1/3