题目内容
通分
①
和
②
和
③
和
.
①
| 2 |
| 3 |
| 4 |
| 5 |
| 7 |
| 21 |
| 4 |
| 7 |
| 5 |
| 8 |
| 7 |
| 12 |
①
=
,
=
;
②
=
;
③
=
,
=
.
| 2 |
| 3 |
| 10 |
| 15 |
| 4 |
| 5 |
| 12 |
| 15 |
②
| 4 |
| 7 |
| 12 |
| 21 |
③
| 5 |
| 8 |
| 15 |
| 24 |
| 7 |
| 12 |
| 14 |
| 24 |
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题目内容
| 2 |
| 3 |
| 4 |
| 5 |
| 7 |
| 21 |
| 4 |
| 7 |
| 5 |
| 8 |
| 7 |
| 12 |
| 2 |
| 3 |
| 10 |
| 15 |
| 4 |
| 5 |
| 12 |
| 15 |
| 4 |
| 7 |
| 12 |
| 21 |
| 5 |
| 8 |
| 15 |
| 24 |
| 7 |
| 12 |
| 14 |
| 24 |