题目内容
计算:(1)
-
+
(2)
-(
-1)+9
-(
-
)0.
| 27 |
| 12 |
| 45 |
| 27 |
| 3 |
|
| 3 |
| 2 |
(1)原式=3
-2
+3
=
+3
;
(2)原式=3
-
+1+3
-1,
=5
.
| 3 |
| 3 |
| 5 |
| 3 |
| 5 |
(2)原式=3
| 3 |
| 3 |
| 3 |
=5
| 3 |
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题目内容
| 27 |
| 12 |
| 45 |
| 27 |
| 3 |
|
| 3 |
| 2 |
| 3 |
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 3 |
| 3 |
| 3 |