题目内容
若
=
，则
=______．
| a |
| 3 |
| b |
| 5 |
| a+b |
| b |
∵
=
，
∴设a=3k，b=5k，
∴
=
=
．
故答案为：
．
| a |
| 3 |
| b |
| 5 |
∴设a=3k，b=5k，
∴
| a+b |
| b |
| 3k+5k |
| 5k |
| 8 |
| 5 |
故答案为：
| 8 |
| 5 |
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题目内容
| a |
| 3 |
| b |
| 5 |
| a+b |
| b |
| a |
| 3 |
| b |
| 5 |
| a+b |
| b |
| 3k+5k |
| 5k |
| 8 |
| 5 |
| 8 |
| 5 |
E
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