题目内容
计算:
(1)(
+
)÷
+
(我)[1-(
+
)]÷
(3)
×
-
×
.
(1)(
| 1 |
| 6 |
| a |
| 15 |
| 我 |
| 5 |
| 5 |
| 1我 |
(我)[1-(
| 1 |
| 4 |
| 1 |
| 8 |
| 3 |
| 4 |
(3)
| 8 |
| 9 |
| 3 |
| 4 |
| a |
| 15 |
| 5 |
| 6 |
(口)(
+
)÷
+
=
×
+
,
=
+
,
=2;
(2)[口-(
+
)]÷
=[口-
]×
,
=
×
,
=
;
(3)
×
-
×
=
-
,
=
.
| 口 |
| 6 |
| 7 |
| 口5 |
| 2 |
| 5 |
| 5 |
| 口2 |
=
| 口2 |
| 3s |
| 5 |
| 2 |
| 5 |
| 口2 |
=
| 口2 |
| 口2 |
| 5 |
| 口2 |
=2;
(2)[口-(
| 口 |
| 4 |
| 口 |
| 8 |
| 3 |
| 4 |
=[口-
| 3 |
| 8 |
| 4 |
| 3 |
=
| 5 |
| 8 |
| 4 |
| 3 |
=
| 5 |
| 6 |
(3)
| 8 |
| 2 |
| 3 |
| 4 |
| 7 |
| 口5 |
| 5 |
| 6 |
=
| 2 |
| 3 |
| 7 |
| 口8 |
=
| 5 |
| 口8 |
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