题目内容
若
=
,求
=______.
| b |
| a |
| 2 |
| 5 |
| a-2b |
| a |
∵
=
,
∴设b=2k,则a=5k,
∴
=
=
=
.
故答案为
.
| b |
| a |
| 2 |
| 5 |
∴设b=2k,则a=5k,
∴
| a-2b |
| a |
| 5k-2×2k |
| 5k |
| k |
| 5k |
| 1 |
| 5 |
故答案为
| 1 |
| 5 |
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题目内容
| b |
| a |
| 2 |
| 5 |
| a-2b |
| a |
| b |
| a |
| 2 |
| 5 |
| a-2b |
| a |
| 5k-2×2k |
| 5k |
| k |
| 5k |
| 1 |
| 5 |
| 1 |
| 5 |