Номер 1074
Обчисли значення виразу:
| 1) 4 | 7 | + ( – 3 | 1 | ) = 4 | 7 | – 3 | 1 | = 4 | 63 | – 3 | 8 | = 1 | 55 | ; |
| 8 | 9 | 8 | 9 | 72 | 72 | 72 |
| 2) –4 | 2 | + (–5 | 1 | ) = –(4 | 6 | + 5 | 7 | ) = –9 | 13 | ; |
| 7 | 3 | 21 | 21 | 21 |
| 3) –7 | 2 | + 3 | 5 | = –(7 | 2 | – 3 | 5 | ) = –(6 | 11 | – 3 | 5 | ) = –(6 | 22 | – 3 | 15 | ) = –3 | 7 | ; |
| 9 | 6 | 9 | 6 | 9 | 6 | 18 | 18 | 18 |
| 4) –12 + 9 | 8 | = –(12 – 9 | 8 | ) = –(11 | 11 | – 9 | 8 | ) = –2 | 3 | ; |
| 11 | 11 | 11 | 11 | 11 |
| 5) – | 13 | + 2,7 = –1,3 + 2,7 = 1,4; |
| 10 |
| 6) –5,25 + 4 | 3 | = –5,25 + 4,75 = –(5,25 – 4,75) = –0,5; |
| 4 |
| 7) 2,81 + (–1 | 7 | ) = 2,81 + (–1,7) = 1,11; |
| 10 |
| 8) 1 | 8 | + (–2,05) = 1 | 8 | + (–2 | 5 | ) = 1 | 8 | + (–2 | 1 | ) = –(2 | 1 | – 1 | 8 | ) = –(1 | 21 | – 1 | 8 | ) = –(1 | 189 | – 1 | 160 | ) = – | 29 | . |
| 9 | 9 | 100 | 9 | 20 | 20 | 9 | 20 | 9 | 180 | 180 | 180 |