已知
是方程5x−ay=15的一个解,则a的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0e131aba1d144b19ed4d25a9c49da34.png)
A.5 | B.−5 | C.10 | D.−10 |
更新时间:2021-10-30 21:13:43
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【知识点】 已知二元一次方程组的解求参数
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单选题
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较易
(0.85)
【推荐1】若
是关于x,y的方程组
的解,则a的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261dff4ebacc081eb17595b2ec6107b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbec615552251a99d9318c88137353e.png)
A.6 | B.5 | C.4 | D.3 |
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单选题
|
较易
(0.85)
名校
【推荐2】已知
和
的方程组
的解是
,则
和
的方程组
的解是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65bd6cdc598a67059dc4293a1694dc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/948d093a1f728a900e4d2a17386f6b32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9214bcbfcf6479a29dbc5187af017e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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