下列哪一個式子化簡後等於 2x? (第 3 章習作-概念 1)

一元一次方程式數學練習卷

Quiz
•
Mathematics
•
7th Grade
•
Hard
Zhuang Jorda
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2(x+1)−1
−2(x−1)
−2x+4x
x+1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知一方程式 2y−3=y+5,若將等號兩邊同乘以 3,則下列何者正確?
y 的值會變大 3 倍
y 的值會縮小倍
y 的值不變
y 的值是 3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
小華今年 x 歲,媽媽的年齡是小華的 3 倍,媽媽今年是幾歲。
3x 歲
x+3 歲
3x+3 歲
x−3 歲
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
民國元年是西元 1912 年,那麼民國 x 年是西元哪一年。
1912+x
1911+x
1913+x
1910+x
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3x−2=4,求 x 的值。
1
2
3
4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
大補國中新生編班,班級數固定。若每班 25 人,則多出 10 人;若每班 27 人,則不足 20 人。請問班級數為多少班?
12 班
13 班
14 班
15 班
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
解下列每一元一次方程式。2[3(x−2)−2x] = 4,x = ?
2
4
6
8
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