3/4 + 1/4 = 4/4 = 15/8 + 3/8 = 8/8 = 1
7/12 - 5/12 = 2/12 = 1/68/15 + 2/15 = 10/15 = 2/3
Итак, результат равен:1 + 1 = 21/62/3
3/4 + 1/4 = 4/4 = 1
5/8 + 3/8 = 8/8 = 1
7/12 - 5/12 = 2/12 = 1/6
8/15 + 2/15 = 10/15 = 2/3
Итак, результат равен:
1 + 1 = 2
1/6
2/3