题目内容
计算:
(1)
-
+
-
;
(2)(-
)0+(
)-1+
+
.
(1)
| 12x |
|
|
| 50x |
(2)(-
| 1 |
| 2 |
| 1 | ||
|
| 3 | ||
|
(
|
(1)原式=2
-
+
-5
=
-
;
(2)原式=1+
+
+2-
=3+
.
| 3x |
| 1 |
| 2 |
| 2x |
| 1 |
| 9 |
| 3x |
| 2x |
=
19
| ||
| 9 |
11
| ||
| 2 |
(2)原式=1+
| 2 |
| 3 |
| 3 |
=3+
| 2 |
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