马小哈同学做作业时,解方程
的步骤如下:
去分母,得
,
去括号,得
,
移项,得
,
合并同类项,得
,
系数化为1,得
.
聪明的马小跳认为马小哈同学的解答不正确,你认为是从第________
填序号
步开始出现错误的;
请你写出这道题正确的解答过程.
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20-21七年级上·全国·单元测试 查看更多[1]
(已下线)2020-2021学年七年级数学上册《单元测试定心卷》(人教版)第三章 一元一次方程(基础过关)
更新时间:2020-09-09 10:58:32
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容易
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【推荐2】举例说明解方程时怎样“移项”,你知道这样做的根据吗?
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解答题-问答题
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【推荐2】已知关于
的方程:
与
有相同的解.
(1)求
的值
(2)求以
为未知数的方程
的解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3cc39cb18e016dd4c5fd74b5a5442b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35b6aa44bb0ef2a4b87abd82df97b64.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)求以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f0ef156f44e5f469c0bee8663cbf177.png)
您最近一年使用:0次