1) 1 1/3+1/3= 3/3 + 1/3 + 1/3= 5/3
2) 2 9/11 - 1 2/11= (2-1) + (9/11 - 2/11)= 1 7/11
3)8 -6 5/7= 8- 47/7= 9/7
4) 3 8/17 + 1 7/17 = 4 15/7
5)7 - 7/11 = 70/11
6) 5/7 + 3 6/7 = 5/7 + 27/7 = 32/7
7) 1 6/11 - 7/11= 17/11 - 7/11 = 10/11
8) 9/15 + 7/15 = 16/15= 1 1/15
9) 9 - 3 7/8 = 9 - 31/8 = 41\ 81
10) 6 6/13 - 5 11/13 = 84/13 - 101/18= 199/234
* "/" это дробь
1) 1 1/3+1/3= 3/3 + 1/3 + 1/3= 5/3
2) 2 9/11 - 1 2/11= (2-1) + (9/11 - 2/11)= 1 7/11
3)8 -6 5/7= 8- 47/7= 9/7
4) 3 8/17 + 1 7/17 = 4 15/7
5)7 - 7/11 = 70/11
6) 5/7 + 3 6/7 = 5/7 + 27/7 = 32/7
7) 1 6/11 - 7/11= 17/11 - 7/11 = 10/11
8) 9/15 + 7/15 = 16/15= 1 1/15
9) 9 - 3 7/8 = 9 - 31/8 = 41\ 81
10) 6 6/13 - 5 11/13 = 84/13 - 101/18= 199/234
* "/" это дробь