解方程
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e8d58e2ec84903bd128ce7feb9d755.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca501b89d23d8c7e50cb9c5ee270743d.png)
更新时间:2023-01-04 21:10:07
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【知识点】 解一元一次方程(三)——去分母解读
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解答题-计算题
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较易
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【推荐2】(1)依据下列解方程
的过程,请在括号内填写变形依据或解方程的步骤.
解:原方程可变形为
,(___________)(___________)
去分母,得:
,(___________)
去括号,得:
,(___________)
(___________),得:
,(等式的基本性质1)
合并同类项,得:
,(合并同类项法则)
(___________),得
.
(2)用适当方法解方程组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e09d95763a7b729aa475ce5e2497a8.png)
解:原方程可变形为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d468e2d355e853e9bb21c33b7f60b581.png)
去分母,得:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd05f80081de5d2790bd7c9bc1e95f7.png)
去括号,得:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c4e916c8928d3e9abbed6224ee3c4fa.png)
(___________),得:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911ed9a06e01df2501e02c09618161e6.png)
合并同类项,得:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3256462c2d7901ff071d55c1a6293ebc.png)
(___________),得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
(2)用适当方法解方程组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58089b00d63509c55b4c9ef12b97dc4c.png)
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