已知①x=1；②x2﹣2x=0；③x﹣3=5；④6﹣x；⑤2x+y=3；⑥xy=2，其中一元一次方程有_刷题宝

题干

已知①x=1；②x²﹣2x=0；③x﹣3=5；④6﹣x；⑤2x+y=3；⑥xy=2，其中一元一次方程有（）

A：1个

B：2个

C：3个

D：4个

上一题下一题 0.0难度选择题更新时间:2018-09-24 03:10:56

答案(点此获取答案解析）

B

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