本课配套习题挑战模式1/5
单选题
难度系数:
1.阅读下面解方程的四步,其中开始发生错误的一步是()
A: 去分母,得2(x+1)-x-1=4 |
B: 去括号,得2x+2-x-1=4 |
C: 移项,得2x-x=4+1-2 |
D: 合并同类项,得x=3 |
一次做对,真牛!
+5奖励规则>
- 提示1:5rOo5oSP56ym5Y+3
- 答案:QQ==
PGltZyB3aWR0aD0xMzUgaGVpZ2h0PTQ5IHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvQjUvckJBQ0ZGVEpuRWloV1MwSkFBQUN0Rk5xYmIwNTg5LnBuZyI+77yMLCDljrvliIbmr43vvIzlvpcy77yIeCsx77yJLSh4LTEpPTQu5pWF6YCJQeOAgg==
本课配套习题挑战模式2/5
单选题
难度系数:
2.解方程,去分母正确的是()
A: 2x=1-(x-1) |
B: 2x=4-x-1 |
C: 4x=4-2(x-1) |
D: 2x=4-(x-1) |
一次做对,真牛!
+5奖励规则>
- 提示1:5rOo5oSP56ym5Y+3
- 提示2:5rOo5oSP5ZCE6aG56YO9w5fliIbmr43nmoTmnIDlsI/lhazlgI3mlbA=
- 答案:RA==
PGltZyB3aWR0aD03MiBoZWlnaHQ9Mzcgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9GRS9yQkFDSmxUSm5FdmdBTjN5QUFBQ0RDUkt3Vk04OTAucG5nIj4s5ZCE6aG56YO9w5c077yM5b6X77yaMng9NC3vvIh4LTHvvIk=
本课配套习题挑战模式4/5
单选题
难度系数:
4.若与的值相等,则x=____.
A: 3 |
B: 6 |
C: 9 |
D: 10 |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u5p2h5Lu277yM5YWI5YiX5pa556iL77yM5YaN6Kej5pa556iL
- 答案:Qw==
PGltZyB3aWR0aD0zNCBoZWlnaHQ9Mzggc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC83My83Ni9yQkFDRTFUSm5GQ3dWZmxNQUFBQnc1NjJBTFkyMDEucG5nIj49PGltZyB3aWR0aD01MCBoZWlnaHQ9Mzcgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9BQS9CNS9yQkFDRkZUSm5GQ0IzNXItQUFBQ0tsc0h6SzgwODIucG5nIj475Y675YiG5q+N77yM5b6X77yaMTIrMng9MyszeCzop6PlvpfvvJp4PTk=
本课配套习题挑战模式5/5
单选题
难度系数:
5.若,则使A-B=1的x的值是____.
A: 4 |
B: 3 |
C: -3 |
D: 1 |
一次做对,真牛!
+5奖励规则>
- 提示1:5YWI5YiX5pa556iL77yM5YaN6K6h566X
- 答案:Qw==
5L6d6aKY5oSP77yM5b6X77yaPGltZyB3aWR0aD05MCBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9GRS9yQkFDSmxUSm5GZWlVQ3BuQUFBQ0w0cUd5UFkwMTYucG5nIj7vvJvljrvliIbmr43vvIzlvpfvvJo8aW1nIHdpZHRoPTE4OCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9GRS9yQkFDSmxUSm5GZlRnOGFzQUFBQzI2VThYV3c5NjcucG5nIj4=