Perform the calculations: 15+2=, 19-3=, 14+4=, 18-5=, 12+6=, 13-2=, 12+7=, 15-3=, 19-4=, 17-1=, 12+3=, 18-6=, 14+2=, 19-2=, 11+6=, 16-5=, 18+1=, 15-4=, 15+4=, 17-1=, 18-7=, 11+3=, 14+2=, 19-2=, 11+6=, 16-5=, 18+1=, 15-4=, 15+4=, 17-1=, 18-7=, 11+3=, 15+2=, 17+2=, 16-3=, 18-2=, 12+7=, 19-4=

Решение:

1. \( 15 + 2 = 17 \)
2. \( 19 - 3 = 16 \)
3. \( 14 + 4 = 18 \)
4. \( 18 - 5 = 13 \)
5. \( 12 + 6 = 18 \)
6. \( 13 - 2 = 11 \)
7. \( 12 + 7 = 19 \)
8. \( 15 - 3 = 12 \)
9. \( 19 - 4 = 15 \)
10. \( 17 - 1 = 16 \)
11. \( 12 + 3 = 15 \)
12. \( 18 - 6 = 12 \)
13. \( 14 + 2 = 16 \)
14. \( 19 - 2 = 17 \)
15. \( 11 + 6 = 17 \)
16. \( 16 - 5 = 11 \)
17. \( 18 + 1 = 19 \)
18. \( 15 - 4 = 11 \)
19. \( 15 + 4 = 19 \)
20. \( 17 - 1 = 16 \)
21. \( 18 - 7 = 11 \)
22. \( 11 + 3 = 14 \)
23. \( 14 + 2 = 16 \)
24. \( 19 - 2 = 17 \)
25. \( 11 + 6 = 17 \)
26. \( 16 - 5 = 11 \)
27. \( 18 + 1 = 19 \)
28. \( 15 - 4 = 11 \)
29. \( 15 + 4 = 19 \)
30. \( 17 - 1 = 16 \)
31. \( 18 - 7 = 11 \)
32. \( 11 + 3 = 14 \)
33. \( 15 + 2 = 17 \)
34. \( 17 + 2 = 19 \)
35. \( 16 - 3 = 13 \)
36. \( 18 - 2 = 16 \)
37. \( 12 + 7 = 19 \)
38. \( 19 - 4 = 15 \)

Ответ: 17, 16, 18, 13, 18, 11, 19, 12, 15, 16, 15, 12, 16, 17, 17, 11, 19, 11, 19, 16, 11, 14, 16, 17, 17, 11, 19, 11, 19, 16, 11, 14, 17, 19, 13, 16, 19, 15.