下列等式:①
;②
;③
;④
;⑤
.其中,是一元一次方程的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc8c2011176ef57a0067da8323acf87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f97ed6dcdcc36c79684e38c24b1e816f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b129ea72bcaf07556f52924a86e4f870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e48c4dadff4260bcf442412fd28b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d2cde6b619a7f5661681ed92d279cfa.png)
A.1个 | B.2个 | C.3个 | D.4个 |
更新时间:2024-03-14 12:02:23
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【推荐1】若
是一元一次方程,则m的值为 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/550aa60ff8e99a141f81289ca45f58d8.png)
A.±2 | B.-2 | C.2 | D.4 |
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