Question

50道以上初一解方程练习题及答案

Answer 1

1. 2(x-2)-3(4x-1)=9(1-x)
2. 11x+64-2x=100-9x
3. 15-(8-5x)=7x+(4-3x)
4. 3(x-7)-2[9-4(2-x)]=22
5.2(x-2)+2=x+1
6.2(x-2)-3(4x-1)=9(1-x)
7.11x+64-2x=100-9x
8.15-(8-5x)=7x+(4-3x)
9.3(x-7)-2[9-4(2-x)]=22
10.3/2[2/3(1/4x-1)-2]-x=2
11.5x+1-2x=3x-2
12.3y-4=2y+1
13.87X*13=5
14.7Z/93=41
15.15X+863-65X=54
16.58Y*55=27489
17.2（x+2）+4=9
18.2(x+4)=10
19.3(x-5)=18
20.4x+8=2(x-1)
21.3(x+3)=9+x
22.6(x/2+1)=12
23.9(x+6)=63
24.2+x=2(x-1/2)
25.8x+3(1-x)=-2
26.7+x-2(x-1)=1
27.x/3 -5 = (5-x)/2
28.2(x+1) /3=5(x+1) /6 -1
29.(1/5)x +1 =(2x+1)/4
30.(5-2)/2 - (4+x)/3 =1
31.2x+3-12=6x-12x+3
32.4x+8x-36+7x=24-60+4x
33.3(x+2)－2(x+2)=2x+4
34.2(10－0.5y)=－(1.5y+2)
35.7(2x-1)-3(4x-1)=4(3x+2)-1;
36.(5y+1)+ (1-y)= (9y+1)+ (1-3y);
37.20%+(1-20%)(320-x)=320×40%
38.2(x-2)+2=x+1
39.2(x-2)-3(4x-1)=9(1-x)
40.11x+64-2x=100-9x
41.15-(8-5x)=7x+(4-3x)
42.3(x-7)-2[9-4(2-x)]=22
43.3/2[2/3(1/4x-1)-2]-x=2
44.10/3 (x/5+3/7)=9x/2
45.5/3（x+0.5)+2=3x-6
46.5x+2(2x/3+2)=2/3(x-6)+2
47.(2x-7)/2-(6x-5)/3=2x+3
48.(3x+2)/5-(x-6)=x/3
49.6x-(x/3+2)=2(x/5+5/2)-3
50.3(x/11-2)-5=2+3x/3
51.10/3(2x-6)=3/5
52.x/2-(x/3-2)=3
53.2/3(x+3)-3=5x/3
54.5/3(2x-5/3)=2x/5-8/9
55.25(x/3-x/2+2/5)-2=3/5(x-2/7)+4/9
56.2(3x+4)-5(x+1)=3
57.2ⅹ＋﹙17－ⅹ﹚×4＝42
58.3(y+1)=2y-1
59.120％x - 11/12x = 6.5
60.4x+9(40-x)=175*30
61.30x+12(x-5)=10(x-3)-15(x-2)
62.2x-1/2[x-1/2(x-1)=2/3(x-1)
63.2＋2/3(1/2x－5/6)＝5x＋4
64.18x/24(100-x)=1/2
65.1－2（2x+3）= －3（2x+1）
66.2(x-2)-3(4x-1)=9(1-x)
67.11x+64-2x=100-9x
68.15-(8-5x)=7x+(4-3x)
69.3(x-7)-2[9-4(2-x)]=22
70.3/2[2/3(1/4x-1)-2]-x=2
71.2(x-2)+2=x+1

Answer 2

0.5x-0.7=6.5-1.3x
1－2（2x+3）= －3（2x+1）
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
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

Answer 3

0.5x-0.7=6.5-1.3x
1－2（2x+3）= －3（2x+1）
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
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

Answer 4

0.5x-0.7=6.5-1.3x
1－2（2x+3）= －3（2x+1）
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
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

Answer 5

（1）2—（1—y）=—2
2-1+y=--2
y=-2-2+1=-3

（2）5—（x—1）=3—3x
5-x+1=3-3x
2x=3-1-5
2x=-3
x=-1.5

（3）3—2（2x+1）=2（x—3）
3-4x-2=2x-6
6x=3-2+6
6x=7
x=7/6

（4）4x—3（20—x）=6x—7（9—x）
4x-60+3x=6x-63+7x
7x-60=13x-63
6x=3
x=0.5

（5）12（2—3x）=4x+4
24-36x=4x+4
40x=20
x=0.5

（6）2（200—15x）=70+25x
400-30x=70+25x
55x=330
x=6

（7）4x—3（20—x）+4=0
4x-60+3x+4=0
7x=60-4=56
x=8

（8）1—3（8—x）=—2（15—2x）
1-24+3x=-30+4x
x=1-24+30
x=7
（9）2-(1-y)=-2
2-1+y=-2
1+y=-2
y=-3

（10）5-（x-1)=3-3x
5-x+1=3-3x
6-x=3-3x
-x+3x=3-6
x=-1.5