Пошаговое объяснение:
2/7 = 1/4+1/28
1/8 = 1/2+(-3/8)
6/9 = 1/3+1/3
9/11 = 1/2+7/22
10/15 = 1/6+1/2
22/30 = 2/5+1/3
Пошаговое объяснение:
2/7 = 1/4+1/28
1/8 = 1/2+(-3/8)
6/9 = 1/3+1/3
9/11 = 1/2+7/22
10/15 = 1/6+1/2
22/30 = 2/5+1/3