1.3 3per7 +4 6per7-5 5pertuju 2.4 3per8+2 2per8-3 7per8 3. 7 4per11-4 9per11+2 3per11 4. 3per10×5per6 5. 10 1per2×4per7×1 1per3

1). 3 3\7 + 4 6\7 - 5 5/7 = 2 4/7

2). 4 3/8 + 2 2/8 - 3 7/8 =
6 5/8 - 3 7/8 =
5 13/8 - 3 7/8 = 2 10/8 = 3 2/8

3). 7 4/11 - 4 9/11 + 2 3/11 =
6 15/11 - 4 9/11 + 2 3/11 = 4 9/11

4). 3/10 × 5/6 = 15/60 = 3/12 = 1/4

5). 10 1/2 × 4/7 × 1 1/3 =
21/2 × 4/7 = 84/14
84/14 × 4/1 = 336/14 = 24