Сложите дроби: 2 1/5 + 2/5 5/8 + 3 1/8 4 13/45 + 4/45 1 1/7 + 5 5/7 9 3/8 + 7 1/8 3 1/2 + 1 1/2 8 2/9 + 4 7/9 5 3/5 + 1 3/5 9 5/9 + 11 7/9

2 1/5+2/5=2 3/5
5/8+3 1/8=3 3/4
4 13/45+4/45=4 17/45
1 1/7+5 5/7=6 6/7
9 3/8 + 7 1/8=16 1/2
3 1/2 + 1 1/2=5
8 2/9 + 4 7/9=13
5 3/5 + 1 3/5=7 1/5
9 5/9 + 11 7/9=21 1/3