题目内容
计算:
(1)2
-6
+
(2)(
-
)÷
(3)(2-3
)×
÷
.
(1)2
|
|
| 8 |
(2)(
| 50 |
| 8 |
| 2 |
(3)(2-3
|
| 6 |
| 2 |
(1)原式=
-6×
+2
=3
-2
;
(2)原式=
-
=5-2=3;
(3)原式=(2-
)×
=2
-3
| 2 |
| ||
| 3 |
| 2 |
| 2 |
| 3 |
(2)原式=
| 25 |
| 4 |
(3)原式=(2-
| 3 |
| 3 |
| 3 |
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