题目内容
若
=5,则
=______.
| x |
| y |
| 2x-5y |
| x-3y |
由
=5得x=5y,
原式=
=
=
,
故答案为:
.
| x |
| y |
原式=
| 2×5y-5y |
| 5y-3y |
| 5y |
| 2y |
| 5 |
| 2 |
故答案为:
| 5 |
| 2 |
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题目内容
| x |
| y |
| 2x-5y |
| x-3y |
| x |
| y |
| 2×5y-5y |
| 5y-3y |
| 5y |
| 2y |
| 5 |
| 2 |
| 5 |
| 2 |