(iii) -1 4 -6 8 5 16 2 8 5
+ 12 7 6 8 0 5 3 2 4
| -1 | 4 | -6 |
| 8 | 5 | 16 |
| 2 | 8 | 5 |
| 12 | 7 | 6 |
| 8 | 0 | 5 |
| 3 | 2 | 4 |
Solution
