题目内容
计算:
(1)22×(-
)+
(2)(
-
-
)×27.
(1)22×(-
| 1 |
| 2 |
| 3 | 8 |
(2)(
| 2 |
| 9 |
| 1 |
| 3 |
| 2 |
| 27 |
(1)原式=4×(-
)+2
=-2+2
=0;
(2)原式=
×27-
×27-
×27
=6-9-2
=-5.
| 1 |
| 2 |
=-2+2
=0;
(2)原式=
| 2 |
| 9 |
| 1 |
| 3 |
| 2 |
| 27 |
=6-9-2
=-5.
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