二元一次方程组计算专项训练(50题)重难点题型

合集下载
  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。

二元一次方程组计算专项训练(50题)
【北师大版】
考试时间:60分钟;满分:100分
姓名:___________班级:___________考号:___________
考卷信息:
本卷试题共计100题,满分100分,限时60分钟,本卷试题针对性较高,覆盖面广,选题有深度,可衡量学生掌握二元一次方程组计算的具体情况!
1.用指定的方法解下列方程组:
(1){y =2x −3
3x +2y =8(代入法); (2){3x +4y =165x −6y =33(加减法).
2.用指定的方法解下列方程组:
(1){3x +4y =19x −y =4(代入法); (2){2x +3y =−53x −2y =12(加减法).
3.用指定的方法解下列方程组:
(1){x −y =42x +y =5(代入法); (2){2x −y =−44x −5y =−23(加减法).
4.用指定的方法解下列方程组
(1){y =x +37x +5y =9(代入法); (2){3x +4y =165x −6y =33(加减法).
5.请用指定的方法解下列方程组:
(1){4x +y =53x +7y =10(代入消元法); (2){2x −3y =54x +2y =18(加减消元法).
6.用指定的方法解下列方程组:
(1){3x +4y =19x −y =4(代入法) (2){8y +5x =24y −3x =−10(加减法)
7.用指定方法解方程组
(1)用加减消元法解方程组:{x −y =4①
2x +y =5②
(2)用代入消元法解方程组:
{2x +y =3①3x −5y =11②.
8.用指定的方法解下列方程组:
(1){3x +4y =19x −y =4(代入法); (2){8y +5x =24y −3x =−10(加减法).
9.按要求解下列方程组.
(1){4x −y =52(x +1)=5(y −1)(用代入法); (2){2a −3b =23a −2b =0(用加减法).
10.按括号内要求解方程组:
(1){2p −3q =13−p +5=4q (代入法) (2){15x +13y =
250.5x −0.3y =0.2
(加减法)
11.解二元一次方程组.
(1){3x +y =15
5x −2y =14
. (2){x−22−5−y
3=1x 0.2
−y+10.3=5.
12.解方程组.
(1){x −y =44x +2y =−1
. (2){5x 6+y
9=65x 6−2y 9
=3.
13.解二元一次方程组:
(1){3x −2y =−8x +2y =0; (2){x 4+y 3=4
35(x −9)=6(y −2)

14.解方程组:
(1){2(x +1)=3(y +2)
x +y =−3. (2){4(x −y −1)=3(1−y)−2x 2
+y 3
=2

15.解方程组:
(1){3(x −2)=y −12(x +1)=y +4; (2){x+y
2+x−y
3=62(x +y)−3x +3y =24.
16.解方程组. (1){
2x −3y =1x =−1
2
+2y
. (2)
{x +y =3000.9×(1+60%)x +0.9×(1+50%)y −300=114.
17.解方程组:
(1){5x −6y =14x +9y =10
; (2){1
2x +2y =5x−34
−y−33
=
112

18.解方程组:
(1){4x −3y =112x +y =13; (2){23x −34y =1
24(x −y)−3(2x +y)=17

19.(1)解方程组:{4(x −y −1)=3(1−y)−2
x 2
+y 3
=2

(2)在等式y =kx +b 中,当x =﹣1时y =0;当x =2时,y =3.试求当x =﹣3时,y 的值?
20.解方程组:{1.5(20x +10y)=15000
1.2(110x +120y)=97200.
21.解方程组:
(1){2x −y =52−5y =2x +3
; (2){x+y
2=y−5x
5x−y 6−3x−12=1.
22.解方程组:
(1){2x +y =42y +1=5x ; (2){23x −34y =124(x −y)−3(2x +y)=17

23.解下列方程组:
(1){x −2y =52x +7y =−1
; (2){2x 3+3y 4=17
12x 6−y
2=−13

24.解方程组.
(1){3x +5y =19①8x −3y =67②; (2){x−3
2−3(y −1)=0①
2(x −3)−2(y −1)=0②.
25.解方程组: (1)x+23
=
3y−18
=
2x+3y 11
; (2){y 3−x+16=3
2(x −y 2)=3(x +y 18
)

26.解下列二元一次方程组:
(1){3x =2y 8x +5y =−31
; (2){x+1
4+3=4y x+125+4y+83=7.
27.解二元一次方程组:
(1){y =2x −37x −3y =11; (2){x+13=
y
22y −(2x −3)=−1

28.解方程组
(1){12x −3
2y =−12x +y =3
; (2){
x −y−12=32(x −y)+3(2y −x)=−6

29.解方程组
(1){3x +4y =19x −y =4
; (2){2x 3+3y 4=1712x 6−y 2=−13

30.解方程组:
(1){4f +g =153g −4f =−3; (2){2(x−y)3−x+y 4=−1
6(x +y)−4(2x −y)=16

31.解下列二元一次方程组:
(1){x +2y =03x −4y =−10; (2){12x −y+13=1
3x +2y =10

32.解方程组:
(1){3x −4y =5x +3y =6; (2){6(x +y)−4(2x −y)=162(x−y)3
−x+y 4
=−1

33.解方程组:
(1){x −y =33x +y =13; (2){23x −14y =322(x −y)−3(2x +y)=17

(1){5x −6y =97x −4y =−5; (2){x+15
−y−12=−1
x +y =2

35.解下列二元一次方程组:
(1){5(x −1)=2(y +3)2(x +1)=3(y −3); (2){2x −3y =22x−3y+57
+2y =9

36.解方程组:
(1){x =−2+3y y −2x =9
; (2){45x +3
5y =11+x 2
−2y−13=1.
37.解方程组
(1){y =1−x①5x +2y =8②; (2){x+1
3=2y①
2(x +1)−y =11②.
38.解下列方程组.
(1){x+1
3
=2y
2(x +1)−y =11; (2){3(x +y)−4(x −y)=4
x+y 2+x−y 6
=1.
39.解下列方程组:
(1){y =3−x
3x −8y =9; (2){4(x −1)=7y +12x −6=
7y−166

40.解下列方程组: (1){2a −b =33a +2b =8; (2){2m +n =1.5
0.8m +0.6n =1.3

(1){3x +2y =5
2x −y =1; (2){3(x +y)−4(x −y)=4x+y 2
+x−y 6
=1

42.解方程组:
(1){2x +y =5①x −y =1②; (2){x +4y =14①x−34−y−33=1
12②.
43.解二元一次方程组:
(1){3x +y =15x −2y =9; (2){3x +5y =23x−13
−5y+3x 2
=−2

44.解方程组
(1){11x −3y =12①−4x +6y =−6②; (2){2x+3
3−5y+2
6=−3①3x +8y =7②.
45.解方程组:
(1){4x −y =30x −2y =−10; (2){3(x +y)−4(x −y)=1x+y 2
+x−y 6
=1

46.解方程组:{2x−15+0.3y−0.2
0.4=2①3x+15−0.03y+0.02
0.04
=0②.
47.解方程组:
(1){m =n +22m +3n =9; (2){2x−15+3y−2
4=23x+15
−3y+24=0;
48.解下列方程组:
(1){3x +2y =133x −2y =5 (2){x+y 2+x−y
3=6
4(x +y)−5(x −y)=2

49.解方程组:
(1){x −y =−62x +3y =8; (2){4(x −y)=3(1−y)+2x 2
+y 3
=2

50.解方程组:
(1){x−22
+y+1
3=−4
3(2x −y)−2(x −3y)=7
; (2){3(x +y)−4(x −y)=4
x+y 2
+x−y 6
=1.。

相关文档
最新文档