下列方程: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/cde8e10a0929cead5d1ca14d9505226a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0f7fbfa2214ca72495a993b2fed8b61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3951e5f6da66ef077af63a9048b47dc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679c1344623fea751840a8384f46597e.png)
A.1个 | B.2个 | C.3个 | D.4个 |
更新时间:2022-05-18 13:58:52
|
A.1个 | B.2个 | C.3个 | D.4个 |