初一二元一次方程組計(jì)算題

2x+9y=81
3x+y=34

2.9x+4y=35
8x+3y=30

3.7x+2y=52
7x+4y=62

4.4x+6y=54
9x+2y=87

5.2x+y=7
2x+5y=19

6.x+2y=21
3x+5y=56

7.5x+7y=52
5x+2y=22

8.5x+5y=65
7x+7y=203

9.8x+4y=56
x+4y=21

10.5x+7y=41
5x+8y=44

5x+3y=8,3x+5y=8
6x-7y=5,x+2y=4
10x-8y=14,x+y=5
4x+7y=3,x+y=0
3x+y=10,7x-y=20
44x+10y=27,x+y=1
8x-y=0,x+y=18
11x-y=12,11y-x=-12
5x+6y=27,2x+3y=12
7x-2y=4,x+2y=12
(2x+y)-5y=2,2x-5y=0
7x-3y=3,3x+2y=21
7x+2y=21,y-6x=1
10x-8y=0,3x-2y=2
3x+y=10,5x-7y=8

用換元法,把一次的設(shè)成一個(gè)字母當(dāng)作常數(shù)來運(yùn)算,把二次的設(shè)成該字母的一次再運(yùn)算.最后在把展開繼續(xù)算一次.

2(x-2)-3(4x-1)=9(1-x)

11x+64-2x=100-9x

15-(8-5x)=7x+(4-3x)

3(x-7)-2[9-4(2-x)]=22

3/2[2/3(1/4x-1)-2]-x=2

2(x-2)+2=x+1
5x^2+3x+1=0
7x^2+x+12=0
2x^2+4x+4=0
8x^2+3x+1=0
5x^2+3x+2=0
45x^2+3x+100=0
89x^2+335x+1=0
x+1=3
2x+3=5
3x+5=8
4x+8=12
5x-6=9
2x-x=1
x+3=0
5x+3x=8
3x+1=2x
x-7=6x+2
5x+1=9
9x+8=24
55x+54=-1
23+58x=99
29x-66=21
0.4(x-0.2)+1.5=0.7x-0.38
x=6

30x-10(10-x)=100
x=5

4(x+2)=5(x-2)
x=18

120-4(x+5)=25
x=18.75

15x+863-65x=54
x=16.18

3(x-2)+1=x-(2x-1)
x=3/2

11x+64-2x=100-9x
x=2

x/3 -5 = (5-x)/2

2(x+1) /3=5(x+1) /6 -1

(1/5)x +1 =(2x+1)/4

(5-2)/2 - (4+x)/3 =1

x/3 -1 = (1-x)/2

(x-2)/2 - (3x-2)/4 =-1

都是麓山的同學(xué)。。要選我來！

叫你媽幫你出

5x+3y=8,3x+5y=8
6x-7y=5,x+2y=4
10x-8y=14,x+y=5
4x+7y=3,x+y=0
3x+y=10,7x-y=20
44x+10y=27,x+y=1
8x-y=0,x+y=18
11x-y=12,11y-x=-12
5x+6y=27,2x+3y=12
7x-2y=4,x+2y=12
(2x+y)-5y=2,2x-5y=0
7x-3y=3,3x+2y=21
7x+2y=21,y-6x=1
10x-8y=0,3x-2y=2
3x+y=10,5x-7y=8

5x+3y=8,3x+5y=8

3X+18=52 x=34/3
4Y+11=22 y=11/4
3X*9=5 x=5/27
8Z/6=48 z=36
3X+7=59 x=52/3
4Y-69=81 y=75/4
8X*6=5 x=5/48
7Z/9=4 y=63/7
15X+8-5X=54 x=4.6
5Y*5=27 y=27/40
8x+2=10 x=1
x*8=88 x=11
y-90=1 y=91
2x-98=2 x=50
6x*6=12 x=1/3
5-6=5x x=-1/5
6*x=42 x=7
55-y=33 y=22
11*3x=60 x=20/11
8-y=2 y=-6
1.x+2=3
2.x+32=33
3.x+6=18
4.4+x=47
5.19-x=8
6.98-x=13
7.66-x=10
8.5x=10
9.3x=27
10.7x=7
11.8x=8
12.9x=9
13.10x=100
14.66x=660
15.7x=49
16.2x=4
17.3x=9
18.4x=16
19.5x=25
20.6x=36
21.8x=64
22.9x=81
23.10x=100
24.11x=121
25.12x=144
26.13x=169
27.14x=196
28.15x=225
29.16x=256
30.17x=289
31.18x=324
32.19x=361
33.20x=400
31.21x=441
32.22x=484
33.111x=12321
34.1111x=1234****
35.11111x=1234****1
36.1111****x=1234****321
37.46/x=23
38.64/x=8
39.99/x=11
40.1235****64x=0
41.2x+1= -2+x
42.4x-3(20-x)=3
43.．-2(x-1)=4
44.3X+189=521
45.4Y+119=22 5
46.3X+77=59
47.4Y-6985=81
48.X=0.1
49.5X=55.5
50.Y=50-85

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