小红同学在解关于x和y的二元一次方程组
时,利用
就将未知数y消去了,则m和n应该满足的条件是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d2196d313978466f25fac9cd11fe51a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65b6223f2470db94b885fd2fac76f0cf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-08-24 13:44:11
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【推荐2】已知关于x,y的二元一次方程组
的解为
,若m,n满足二元一次方程组
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae26955caf3e251b1d5b095bbe521d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e63ff2b4867ad1646ec7d2fdcaa9d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f77ca8f64a87666b739dbc438fefa22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e486a69c94a6442bb2131452fd88996f.png)
A.0 | B.2 | C.4 | D.6 |
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