1 . 解方程(组):
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57455b7b4d89dad2087e292c4c8de117.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633d54e79f2b95f69091f58ef6429586.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ef0bfc1801eca733a05f7ed6ccb8ae.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09a085fcf0e227c4a789412b45883315.png)
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2 . 定义:关于x的方程
与方程
(a,b均为不等于0的常数)互为“反对方程”.例如:方程
与方程
互为“反对方程”.
(1)【定义理解】若方程
与方程
互为“反对方程”,则
______.
(2)【知识应用】若关于x的方程
与方程
互为“反对方程”,求m,n的值.
(3)【拓展提高】若关于x的方程
与其“反对方程”的解都是整数,直接写出常数b的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02448598bbb9d28612fbb68a3d7d2a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107b8c7c5b3321e555a353c95a1b2a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0f0addd8d409694a56d40940e87ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c51a74f86b2ebabf189d58822b638987.png)
(1)【定义理解】若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6f08b8e2c945bd2a63514634be5f8e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba4bfd3a456f1ea99e08eebbac71743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
(2)【知识应用】若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e966a192c8f6bc38047d78d8fc3b4a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e334093223e9868587005590b096c3fa.png)
(3)【拓展提高】若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d5680ada1692abf06c4eb747c3612c.png)
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3 . 解下列方程(组)
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342e44ab6b4cb9a16afa2804fad04d21.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342e44ab6b4cb9a16afa2804fad04d21.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e72ed73aac6d5d573ced6d3a28d4125.png)
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4 . 解下列方程
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425a0aaa13ae80dc194c37a2d3f2c91a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3aea636555e339d60857417aa71c4e8.png)
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5 . 已知
是方程
的解,则a的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f09298b9d5350978fc896b31dfa844.png)
A.![]() | B.![]() | C.![]() | D.3 |
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名校
6 . 方程
的解为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8db8fe1a672b5901760c3cc1a42354e.png)
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2024-05-06更新
|
69次组卷
|
2卷引用:河南省鹤壁市2023-2024学年七年级下学期月考数学试题
7 . 已知关于
的一个方程
是一元一次方程.
(1)求m的值.
(2)若此方程的解与关于
的一元一次方程
的解互为相反数,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee464f0f54f1c7de20cc4e2e0e67f8ec.png)
(1)求m的值.
(2)若此方程的解与关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfdf1497a5b1d959fe232acc48240269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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名校
8 . 下列变形,正确的是( )
A.由![]() ![]() |
B.由![]() ![]() |
C.由![]() ![]() |
D.由![]() ![]() |
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9 . 已知
是关于
的不等式
的解集,那么
的值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b83a660527359758db64e6566466293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e960839176a1609f3150c3a331563b5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
10 . 解下列方程(组):
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3d9d8afb1aa2129d909bee1111a77e.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dc7b3c7ab68ec2c9814302c8cde718.png)
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6f6d7dd8f3848b9bce75a33c384388c.png)
(4)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba130222155b1ec29742a16bbc27e29c.png)
(5)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3d9d8afb1aa2129d909bee1111a77e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dc7b3c7ab68ec2c9814302c8cde718.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6f6d7dd8f3848b9bce75a33c384388c.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba130222155b1ec29742a16bbc27e29c.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/578a2727ae7edb88b5b90f99aa69dd12.png)
您最近一年使用:0次