
Week 14 AI 练习卷
Authored by Shiqi Jiang
Mathematics
7th Grade
Used 13+ times

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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
m=2
m=-3
m=±3
m=1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知x=2是关于x的方程3x+a=0的一个解,则a的值是
-6
-3
-4
-5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列方程中,属于一元一次方程的是
3x-y=0
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列变形中,正确的是
若3a=b+1,则3a+b=1
若a=b,则2+a=2-b
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列说法正确的是
如果ac=bc,那么a=b
如果a=b,那么a+2=b-2
如果a=b,那么ac=bc
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知等式3a=2b+5,则下列等式中不一定成立的是
3a-5=2b
3a+1=2b+6
3ac=2bc+5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列等式变形正确的是
若2x+y=5,则y=2x-5
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