题目内容
计算:(1)
+
-9
;
(2)(6
-2x
)÷3
.
| 2 | ||
|
| 12 |
|
(2)(6
|
|
| 2x |
(1)原式=
-1+2
-3
=-1;
(2)原式=(3
-
)÷3
=2
÷3
=
.
| 3 |
| 3 |
| 3 |
(2)原式=(3
| 2x |
| 2x |
| 2x |
| 2x |
| 2x |
| 2 |
| 3 |
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题目内容
| 2 | ||
|
| 12 |
|
|
|
| 2x |
| 3 |
| 3 |
| 3 |
| 2x |
| 2x |
| 2x |
| 2x |
| 2x |
| 2 |
| 3 |