题目内容
通分.
和
和
.
| 1 |
| 3 |
| 6 |
| 5 |
| 8 |
| 27 |
| 5 |
| 81 |
①3和5的最小公倍数为15,
则
=
=
=
=
②27和81的最小公倍数为81,
则
=
=
=
则
| 1 |
| 3 |
| 1×5 |
| 3×5 |
| 5 |
| 15 |
| 6 |
| 5 |
| 6×3 |
| 5×3 |
| 18 |
| 15 |
②27和81的最小公倍数为81,
则
| 8 |
| 27 |
| 8×3 |
| 27×3 |
| 24 |
| 81 |
| 5 |
| 81 |
| 5 |
| 81 |
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