题目内容
计算
(
-
)×
÷
÷
-
×
(
÷
-
)×
．
(
| r |
| 6 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 了 |
| t |
| 2r |
| 了 |
| r |
| 2 |
| 7 |
| 7 |
| 10 |
(
| 10 |
| 7 |
| r |
| 14 |
| 11 |
| 8 |
| 4 |
| 7 |
（1）(
| 5 |
| u |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 手 |
=
| 1 |
| 手 |
| 1 |
| 2 |
| 1 |
| 手 |
=
| 1 |
| u |
| 1 |
| 手 |
=
| 1 |
| 2 |
（2）
| 9 |
| 25 |
| 手 |
| 5 |
| 2 |
| 7 |
| 7 |
| 1c |
=
| 手 |
| 5 |
| 1 |
| 5 |
=
| 2 |
| 5 |
（手）(
| 1c |
| 7 |
| 5 |
| 14 |
| 11 |
| 2 |
| 4 |
| 7 |
=(4-
| 11 |
| 2 |
| 4 |
| 7 |
=
| 21 |
| 2 |
| 4 |
| 7 |
=
| 手 |
| 2 |
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