Номер 1158
Обчисліть:
1) |–2,5| + (–3,7) + (–|–7,5|) = 2,5 + (–3,7) + (–7,5) = (2,5 + (–7,5)) + (–3,7) = –5 + (–3,7) = –8,7;
| 2) –7 | 3 | + |–5,1| + |–|–2,9|| = –7,6 + 5,1 + 2,9 = –7,6 + 8 = 0,4; |
| 5 |
| 3) –0,35 + |–1 | 7 | | + |–|–2 | 71 | | = –0,35 + 1,14 + 2,71 = –0,35 + 3,85 = 3,5; |
| 50 | 100 |
4) –2,5 + (–3,7) + |–7,5| = (–2,5 + 7,5) + (–3,7) = 5 + (–3,7) = 1,3;
| 5) –7 | 3 | + (–5,1) + |–2,9| = (–7,6 + (–5,1)) + 2,9 = –12,7 + 2,9 = –9,8. |
| 5 |