11/45 + 10/45 = 21/45 = 7/15
1/3 + 1/4 = 4/12 + 3/12 = 7/12
1/2 - 2/9 = 9/18 - 4/18 = 5/18
Пошаговое объяснение:
11/45 - 10/45 = 1/45
11/45 + 10/45 = 21/45 = 7/15
1/3 + 1/4 = 4/12 + 3/12 = 7/12
1/2 - 2/9 = 9/18 - 4/18 = 5/18
Пошаговое объяснение:
11/45 - 10/45 = 1/45
1/3 + 1/4 = 4/12 + 3/12 = 7/12
1/2 - 2/9 = 9/18 - 4/18 = 5/18