题目内容
计算
(1)(
+
)-(
-
)
(2)(2
-3
)÷
.
(1)(
| 24 |
|
| 6 |
|
(2)(2
| 48 |
| 27 |
| 6 |
(1)原式=2
+
-
+
=
+
.
(2)原式=(8
-9
)÷
=-
÷
=-
.
| 6 |
| 1 |
| 2 |
| 2 |
| 6 |
| 1 |
| 4 |
| 2 |
=
| 6 |
| 3 |
| 4 |
| 2 |
(2)原式=(8
| 3 |
| 3 |
| 6 |
=-
| 3 |
| 6 |
=-
| ||
| 2 |
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