题目内容
计算:
(1)(3
-2
+
)÷2
; (2)
-(x
+
).
(1)(3
| 12 |
|
| 48 |
| 3 |
| 2 |
| 3 |
| 9x |
|
| x |
(1)原式=(6
-
+4
)÷2
=
÷2
=
.
(2)原式=2
-(
+
)
=0.
| 3 |
2
| ||
| 3 |
| 3 |
| 3 |
=
28
| ||
| 3 |
| 3 |
=
| 14 |
| 3 |
(2)原式=2
| x |
| x |
| x |
=0.
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