Ответ:
Решение:
| 40 + 20 = 60 | 70 - 20 = 50 | 20 + 30 - 40 = 10 | 50 - (10 + 20) = 20 |
| 50 + 30 = 80 | 80 - 50 = 30 | 90 - 50 + 30 = 70 | 40 + (90 - 60) = 70 |
| 60 + 40 = 100 | 100 - 70 = 30 | 30 + 40 - 60 = 10 | (80 - 30) + 20 = 70 |
Ответ: 60, 50, 10, 20, 80, 30, 70, 70, 100, 30, 10, 70.
