题目内容
脱式计算.
|
|
|
(1)
-(
-
),
=
-
,
=
;
(2)
+
-
,
=
-
,
=
;
(3)
-(
+
),
=
-
,
=
.
| 3 |
| 5 |
| 1 |
| 2 |
| 1 |
| 4 |
=
| 3 |
| 5 |
| 1 |
| 4 |
=
| 7 |
| 20 |
(2)
| 3 |
| 10 |
| 1 |
| 5 |
| 1 |
| 3 |
=
| 1 |
| 2 |
| 1 |
| 3 |
=
| 1 |
| 6 |
(3)
| 8 |
| 9 |
| 1 |
| 6 |
| 1 |
| 3 |
=
| 8 |
| 9 |
| 1 |
| 2 |
=
| 7 |
| 18 |
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