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均一教育平台 / 代入消去法與加減消去法複習

Authored by Peggy Peggy

Mathematics

7th Grade

Used 1+ times

均一教育平台 / 代入消去法與加減消去法複習
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5 questions

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1.

FILL IN THE BLANKS QUESTION

5 mins • 1 pt

利用加減消去法解二元一次聯立方程式,求x、y。

6x−3y=−9⋯①
6x−4y=−6⋯②

(a)  

2.

FILL IN THE BLANKS QUESTION

5 mins • 1 pt

利用代入消去法解二元一次聯立方程式,求x、y。

x+2y=8⋯①
y=3⋯②

(a)  

3.

FILL IN THE BLANKS QUESTION

5 mins • 1 pt

利用加減消去法解二元一次聯立方程式,求x、y。
3x+2y=4⋯①
3x−2y=8⋯②

(a)  

4.

FILL IN THE BLANKS QUESTION

15 mins • 2 pts

利用加減消去法解二元一次聯立方程式,求x、y。
1/4x-2y=-7⋯①
3x+5y=3⋯②

(a)  

5.

MULTIPLE SELECT QUESTION

5 mins • 2 pts

下列哪組數次方程式 2x+y=5 的解?

( x , y ) = ( 2 , -1 )

( x , y ) = ( 3 , -1 )

( x , y ) = ( 2 , 1 )

( x , y ) = ( 1 , 3 )

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