题目内容
化简
(1)
-
-
+
(2)(
-
)÷
(1)
| 12 |
| 18 |
| 32 |
| 48 |
| 48 |
| 27 |
| 3 |
(1)
-
-
+
=2
-3
-4
+4
=6
-7
;
(2)(
-
)÷
=(4
-3
)÷
=1.
| 12 |
| 18 |
| 32 |
| 48 |
| 3 |
| 2 |
| 2 |
| 3 |
=6
| 3 |
| 2 |
(2)(
| 48 |
| 27 |
| 3 |
| 3 |
| 3 |
| 3 |
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