题目内容
计算:
(1)(
-2
)×
;
(2)5
-6
-
.
(1)(
|
| 3 |
| 6 |
(2)5
| 12 |
|
| 27 |
(1)原式=
-2
=2-6
;
(2)原式=5×2
-6×
-3
=10
-2
-3
=5
;
|
| 3×6 |
=2-6
| 2 |
(2)原式=5×2
| 3 |
| ||
| 3 |
| 3 |
=10
| 3 |
| 3 |
| 3 |
=5
| 3 |
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