(1)已知
,
,
①求
的值.
②求
的值.
(2)2x-5y-3=0 ,则
= .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0779f074938cbb37d3833d1e93669e5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b96a898488fd46fc2cd4f85b00b6430d.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/054b5c1324d733905f9aef006e095eb1.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f734e0b4e1e72ee7ddbb4b9baceb24c.png)
(2)2x-5y-3=0 ,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68f8a6bfcf6e76f971e901a11586fc00.png)
更新时间:2022-09-07 20:48:18
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