1 . 解方程:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636cc233cea1df2b6332a2d81ed92d94.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93705b670a1678f746b771f1a75d37e9.png)
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2 . 解下列方程:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6511dd2e45a1ca89f65227fbed9c3d29.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92298337ad28df5b76cda6f645b67747.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31cf0c18237bae7a9c76548b7bcf82b2.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2438206ab193eb629691df9cb66759.png)
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3 . 解下列方程时,合并同类项不正确的是( )
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D. ![]() ![]() |
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4 . 解方程
时,移项(不合并)后得________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f27361431f016570d56d3cc1cbbfcd.png)
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5 . 下列各题中的变形属于移项的是( )
A.由![]() ![]() | B.由![]() ![]() |
C.由![]() ![]() | D.由![]() ![]() |
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6 . 解方程:
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ad9e8278bb3f5dc8af613a6cb9e30c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3cd55d3fa2e97bd6094292242bb392a.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fb8c0463f9c5e954e8b25747001bd6d.png)
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7 . 若点
是x轴上的点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
___________ ;若点
是y轴上的点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5c65879de3ac12934592755e9a23a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5c65879de3ac12934592755e9a23a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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8 . 已知点
在
轴上,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49952da5197d5a67e125c67a7aeaf196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.3 | C.0 | D.![]() |
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9 . 定义:对于任意实数
,
,如果满足
,那么称
,
互为“美好数”,点
为“美好点”.
(1)下列命题:①1.5与3互为“美好数”;②若点
为“美好点”,则点
也一定为“美好点”;③若点
与
互为相反数,则
一定不是“美好点”;④存在与1互为“美好数”的数.其中真命题是________(填序号)
(2)若
为“美好点”,求
的值.
(3)已知
,
是二元一次方程组
的解,请判断点
是否为“美好点”?若是,请求出
的值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132bc768c61ab195768601a0be02222a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
(1)下列命题:①1.5与3互为“美好数”;②若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/570c8e60ade774f91cf6bfe48a6117c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f51a1ff550998ddcc8753f52338ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f3d25c424fbf8c696aee4580bbb776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2024-03-11更新
|
115次组卷
|
3卷引用:专题06 二元一次方程组(十一大题型)-【好题汇编】备战2023-2024学年七年级数学下学期期中真题分类汇编(山东专用)
(已下线)专题06 二元一次方程组(十一大题型)-【好题汇编】备战2023-2024学年七年级数学下学期期中真题分类汇编(山东专用)湖南省岳阳市华容县华一明辉中学2024-2025学年 七年级下学期第一次月考数学试题河北省沧州市南皮县桂和中学2023-2024学年八年级上学期月考数学试题
10 . 已知方程
与方程
有一个相同的解
,你能求出
的值吗?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b22a9f2e60bc27a7b0f76a3e43b8270f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16a50a3b08377b6ac2db9ef3af132979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a86f7210e76c0fcee305be008e5c288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
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