中学生网络课堂
的解是关于x，y的二元一次方程3x-y+m=0的一个解，则m等于（ ） 本课配套习题挑战模式2/5
单选题
难度系数：
2.
关于x，y的方程组
的解互为相反数，则k的值是( )
| A: 8 |
| B: 9 |
| C: 10 |
| D: 11 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5YWI5qC55o2ueHnkupLkuLrnm7jlj43mlbDlvpflh7p4PS15PC9wPg==
- 提示2：PHA+5YaN5oqKeD0teeS7o+WFpeKRoOS4reaxguWHunjjgIF555qE5YC877yM5oqKeOOAgXnnmoTlgLzku6PlhaXikaHkuK3ljbPlj6/lvpflh7pr55qE5YC8Ljxicj48L3A+PHA+PGltZyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzI5LzZEL3JCQUNFMU1RVm1MaVVwVExBQUFHREJRbkdPODI3Ni5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMjkvNkQvckJBQ0UxTVFWbUxpVXBUTEFBQUdEQlFuR084Mjc2LnBuZyIgYWx0PSIiIHN0eWxlPSJ3aWR0aDogMTY2cHg7IGhlaWdodDogNDlweDsiPjwvcD4=
- 答案：RA==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.关于x、y的方程组
的解也是方程3x+2y=34的一组解，那么m的值是（）
的解也是方程3x+2y=34的一组解，那么m的值是（） | A: 2 |
| B: -1 |
| C: 1 |
| D: -2 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWwhm3nnIvlgZrlt7Lnn6XmlbDvvIzmsYLlh7rmlrnnqIvnu4TnmoTop6PooajnpLrlh7p45LiOee+8jOS7o+WFpeW3suefpeaWueeoi+S4reWNs+WPr+axguWHum3nmoTlgLwu
- 答案：QQ==
PGRpdj7op6PvvJo8aW1nIHdpZHRoPTk3IGhlaWdodD02MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzIzLzY5L3JCQUNFMU1NWDNIZ1l4SkFBQUFEWFVlSm03ODY3Ny5wbmciPuKRoC3ikaHlvpfvvJozeT0tNm3vvIw8YnI+6Kej5b6X77yaeT0tMm3vvIw8YnI+4pGgK+KRocOXMuW+l++8mjN4PTIxbe+8jDxicj7op6PlvpfvvJp4PTdt77yMPGJyPuWwhng9N23vvIx5PS0ybeS7o+WFpTN4KzJ5PTM05b6X77yaMjFtLTRtPTM077yMPGJyPuino+W+l++8mm09Mi4gPGJyPuaVhemAiUE8L2Rpdj4=
本课配套习题挑战模式4/5
单选题
难度系数：
4.关于x、y的方程组
的解也是方程x+y=5的一组解，那么k的值是（）
的解也是方程x+y=5的一组解，那么k的值是（） | A: -1 |
| B: 1 |
| C: 5 |
| D: -5 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOeUqOWQq0vnmoTlvI/lrZDooajnpLp45ZKMeeW5tuS7o+WFpXgreT01
- 答案：Qg==
PGRpdj7op6PvvJo8aW1nIHdpZHRoPTY5IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzIzLzY5L3JCQUNFMU1NWDNfek9CNzlBQUFDbGpTaTkzRTU0Mi5wbmciPjxlbT7vvIzlvpc8L2VtPjxlbT54PTdrPC9lbT48ZW0+77yMPC9lbT48ZW0+eT0tMms8L2VtPjwvZGl2PjxkaXY+PGVtPuKItDwvZW0+PGVtPjdrLTJrPTU8L2VtPjwvZGl2PjxkaXY+PGVtPks9MTwvZW0+PC9kaXY+PGRpdj7iiLTpgIlCPC9kaXY+
本课配套习题挑战模式5/5
单选题
难度系数：
5.
关于x、y的方程组
的解也是方程x+3y+7m=20的一组解，那么m的值是（ ）
| A: 0 |
| B: 1 |
| C: 2 |
| D:
|
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5YWI6Kej5pa556iL57uE55So5ZCrbeeahOS7o+aVsOW8j+ihqOekuuWHunjvvIx55ZCO77yM5Luj5YWl5LqM5YWD5LiA5qyh5pa556iLeCszeSs3bT0yMO+8jOWPr+W+l+WIsOWFs+S6jm3nmoTkuIDlhYPkuIDmrKHmlrnnqIvvvIzmsYLop6PljbPlj688L3A+
- 答案：Qw==
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
