Запиши смешанную дробь в виде неправильной дроби: 1 целая 1/3; 3 целая 1/5; 1 целая 4/13; 1 целая 2/3; 2 целая 2/5; 4 целая 4/15; 1 целая 3/4; 9 целая 5/7; 12 целая 2/3.

1) 1 1/3 = (1 * 3 + 1) / 3 = 4/3;

2) 3 1/5 = (3 * 5 + 1) / 5 = 16/5;

3) 1 4/13 = (1 * 13 + 4) / 13 = 17/13;

4) 1 2/3 = (1 * 3 + 2) / 3 = 5/3;

5) 2 2/5 = (2 * 5 + 2) / 5 = 12/5;

6) 4 4/15 = (4 * 15 + 4) / 15 = 64/15;

7) 1 3/4 = (1 * 4 + 3) / 4 = 7/4;

8) 9 5/7 = (9 * 7 + 5) / 7 = 68/7;

9) 12 2/3 = (12 * 3 + 2) / 3 = 38/3.