Question

求一元一次方程组50道和一元一次不等式组20道，不等式组题目要原创的，网上的都抄完了。谢谢。

Answer 1

1. 2x+3x+4x=18
9x=18
x=2

2. 13x-15x+x=-3
-x=-3
x=3

3.2.5y+10y-6y=15-21.5
6.5y=-6.5
y=-1

4.1/2b-2/3b+b=2/3*6-1
1/2b-2/3b+b=3
7/6b=3
b=18/7

5. x+3x=-16
4x=-16
x=-4

6. 16y-2.5y-7.5y=5
6y=5
y=5/6

7. 3x+5=4x-1
-x=-6
x=6

8. 9-3y=5y+5
-8y=-4
y=0.5

9. 4x+3（2x-3)=12-(x+4)
11x=17
x=17/11

10. 6(1/2x-4)+2x=7-(1/3x-1)
19/3x=32
x=96/19

11. 4/3-8x=3-11/2x
-5/2x=5/3
x=-2/3

12. 0.5x-0.7=6.5-1.3x
1.8x=7.2
x=4

13. 1/6(3x-6)=2/5x-3
1/10x=-2
x=-20

14. x-4=29
x=34

15. 1/2x+2=6
1/2x=4
x=8

16. 3x+1=4
3x=3
x=1

17. 4x-2=2
4x=4
x=1

18. x-5=6
x=11

19. 0.3x=45
x=150

20. 5x+4=0
5x=-4
x=-0.8
7(2x-1)-3(4x-1)=4(3x+2)-1;

(5y+1)+ (1-y)= (9y+1)+ (1-3y);

20%+(1-20%)(320-x)=320×40%

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

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

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

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)-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

1.7(2x-1)-3(4x-1)=4(3x+2)-1
2.(5y+1)+ (1-y)= (9y+1)+ (1-3y)
3.[ (- 2)-4 ]=x+2
4.20%+(1-20%)(320-x)=320×40%
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