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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