7+3/5 = 35/5 + 3/5 = 38/5 = 7.6

2 10/13+1 1/13 = (2 + 1) + (10/13 + 1/13) = 3 + 11/13 = 3 11/13

15 8/13-7 2/13 = (15-7) + (8/13 - 2/13) = 8 + 6/13 = 8 6/13

Відповідь:

Покрокове пояснення:

7+3/5 = 35/5 +3/5 = (35+3)/5= 38/5 = 7 3/5

2 10/13+1 1/13 = 36/13 + 14/13= (36+14)/13= 50/13= 3 11/13

15 8/13-7 2/13 = 203/13 - 93/13 = 110/13= 8  6/13