Номер 1129
Виконай віднімання:
| 1) | 2 | – ( – | 1 | ) = | 2 | + | 1 | = | 4 | + | 3 | = | 7 | ; |
| 9 | 6 | 9 | 6 | 18 | 18 | 18 |
| 2) – | 3 | – ( – | 7 | ) = – | 3 | + | 7 | = | 7 | – | 3 | = | 28 | – | 15 | = | 13 | ; |
| 8 | 10 | 8 | 10 | 10 | 8 | 40 | 40 | 40 |
| 3) | 7 | – | 13 | = | 7 | + (– | 13 | ) = | 21 | + (– | 26 | ) = – | 5 | ; |
| 12 | 18 | 12 | 18 | 36 | 36 | 36 |
| 4) – | 11 | – | 8 | = – | 11 | + (– | 8 | ) = –( | 33 | + | 32 | ) = – | 65 | = – | 129 | . |
| 12 | 9 | 12 | 9 | 36 | 36 | 36 | 36 |