39-26= 71+28= 52-2= 41+22= 84+1= 9+41= 51-29= 82-37= 17-9= 41-21= 80-66= 8+51= 71-40= 81-7= 29+9= 83-23= 36+44= 80-19= 29+39= 25+7=

Решение:

1. \( 39 - 26 = 13 \)
2. \( 71 + 28 = 99 \)
3. \( 52 - 2 = 50 \)
4. \( 41 + 22 = 63 \)
5. \( 84 + 1 = 85 \)
6. \( 9 + 41 = 50 \)
7. \( 51 - 29 = 22 \)
8. \( 82 - 37 = 45 \)
9. \( 17 - 9 = 8 \)
10. \( 41 - 21 = 20 \)
11. \( 80 - 66 = 14 \)
12. \( 8 + 51 = 59 \)
13. \( 71 - 40 = 31 \)
14. \( 81 - 7 = 74 \)
15. \( 29 + 9 = 38 \)
16. \( 83 - 23 = 60 \)
17. \( 36 + 44 = 80 \)
18. \( 80 - 19 = 61 \)
19. \( 29 + 39 = 68 \)
20. \( 25 + 7 = 32 \)

Ответ: 13, 99, 50, 63, 85, 50, 22, 45, 8, 20, 14, 59, 31, 74, 38, 60, 80, 61, 68, 32.