三百道易解方程哪有 急用

2021-05-05 20:36:02 字數 6439 閱讀 2419

1樓:

3x+5x=48 14x-8x=12 6*5+2x=4420x-50=50 28+6x=88 32-22x=1024-3x=3 10x*(5+1)=60 99x=100-xx+3=18 x-6=12 56-2x=204y+2=6 x+32=76 3x+6=1816+8x=40 2x-8=8 4x-3*9=298x-3x=105 x-6*5=42 x+5=72x+3=10 12x-9x=9 6x+18=4856x-50x=30 5x=15 78-5x=2832y-29=3 5x+5=15 89x-9=80100-20x=20 55x-25x=60 76y-75=123y-23=23 4x-20=0 80y+20=10053x-90=16 2x+9x=11 12y-12=2480+5x=100 7x-8=6 65x+35=10019y+y=40 25-5x=15 79y+y=8042x+28x=140 3x-1=8 90y-90=9080y-90=70 78y+2y=160 88-x=809-4x=1 20x=40 65y-30=10051y-y=100 85y+1=-86 45x-50=403x+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=1234321

35.11111x=123454321

36.111111x=1234565432137.46/x=23

38.64/x=8

39.99/x=11

40.1235467564x=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

1. a^3-2b^3+ab(2a-b)

=a^3+2a^2b-2b^3-ab^2

=a^2(a+2b)-b^2(2b+a)

=(a+2b)(a^2-b^2)

=(a+2b)(a+b)(a-b)

2. (x^2+y^2)^2-4y(x^2+y^2)+4y^2=(x^2+y^2-2y)^2

3. (x^2+2x)^2+3(x^2+2x)+x^2+2x+3=(x^2+2x)^2+4(x^2+2x)+3=(x^2+2x+3)(x^2+2x+1)=(x^2+2x+3)(x+1)^2

4. (a+1)(a+2)+(2a+1)(a-2)-12=a^2+3a+2+2a^2-3a-2-12=3a^2-12

=3(a+2)(a-2)

5. x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2

=[x(y+z)-y(x-z)]^2

=(xz+yz)^2

=z^2(x+y)^2

6. 3(a+2)^2+28(a+2)-20=[3(a+2)-2][(a+2)+10]=(3a+4)(a+12)

7. (a+b)^2-(b-c)^2+a^2-c^2=(a+b)^2-c^2+a^2-(b-c)^2=(a+b+c)(a+b-c)+(a+b-c)(a-b+c)=(a+b-c)(a+b+c+a-b+c)=2(a+b-c)(a+c)

8. x(x+1)(x^2+x-1)-2

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

=(x^2+x)^2-(x^2+x)-2

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

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

①14.59+x-25.31=0

x=10.72

②x-48.32+78.51=80

x=49.81

③820-16x=45.5×8

x=28.5

④(x-6)×7=2x

x=8.4

⑤3x+x=18

x=4.5

⑥0.8+3.2=7.2

x=5⑦12.5-3x=6.5

x=2⑧1.2(x-0.64)=0.54

x=1.09

⑨x+12.5=3.5x

x=5⑩8x-22.8=1.2

x=37(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 =-111x+64-2x=100-9x

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

3(x-7)-2[9-4(2-x)]=223/2[2/3(1/4x-1)-2]-x=22(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)]=223/2[2/3(1/4x-1)-2]-x=22(x-2)+2=x+1

1.7(2x-1)-3(4x-1)=4(3x+2)-12.(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)]=2210.3/2[2/3(1/4x-1)-2]-x=211.5x+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 -129.(1/5)x +1 =(2x+1)/430.

(5-2)/2 - (4+x)/3 =115x-8(5x+1.5)=18*1.25+x3x+189=521

4y+119=22

3x*189=5

8z/6=458

3x+77=59

4y-6985=81

87x*13=5

7z/93=41

15x+863-65x=54

58y*55=27489

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)]=225.

3/2[2/3(1/4x-1)-2]-x=26. 2(x-2)+2=x+1

7. 0.4(x-0.2)+1.5=0.7x-0.388. 30x-10(10-x)=100

9. 4(x+2)=5(x-2)

10. 120-4(x+5)=25

11. 15x+863-65x=54

12. 12.3(x-2)+1=x-(2x-1)13. 11x+64-2x=100-9x14. 14.59+x-25.31=0

15. x-48.32+78.51=8016. 820-16x=45.5×8

17. (x-6)×7=2x

18. 3x+x=18

19. 0.8+3.2=7.2

20. 12.5-3x=6.5

21. 1.2(x-0.64)=0.5422. x+12.5=3.5x

23. 8x-22.8=1.2

24. 1\ 50x+10=60

25. 2\ 60x-30=20

26. 3\ 3^20x+50=110

27. 4\ 2x=5x-3

28. 5\ 90=10+x

29. 6\ 90+20x=30

30. 7\ 691+3x=700

1 2x-10.3x=15

2 0.52x-(1-0.52)x=803 x/2+3x/2=7

4 3x+7=32-2x

5 3x+5(138-x)=540

6 3x-7(x-1)=3-2(x+3)7 18x+3x-3=18-2(2x-1)8 3(20-y)=6y-4(y-11)9 -(x/4-1)=5

10 3[4(5y-1)-8]=6

(1)-3x-6x2=7

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

(3)3y-4=2y+1

(4)3y-4=y+3

(5)3y-y=3+4

(6)0.4x-3=0.1x+2

(7)5x+15-2x-2=10

(8)2x-4+5-5x=-1

(9)3x+189=521

(10)4y+119=22

(11)3x*189=5

(12)8z/6=458

(13)3x+77=59

(14)4y-6985=81

(15)87x*13=5

(16)46/x=23 x=2

(17)64/x=8 x=8

(18)99/x=11 x=9

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)]=225.

3/2[2/3(1/4x-1)-2]-x=26. 2(x-2)+2=x+1

7. 0.4(x-0.2)+1.5=0.7x-0.388. 30x-10(10-x)=100

9. 4(x+2)=5(x-2)

10. 120-4(x+5)=25

11. 15x+863-65x=54

12. 12.3(x-2)+1=x-(2x-1)13. 11x+64-2x=100-9x14. 14.59+x-25.31=0

15. x-48.32+78.51=8016. 820-16x=45.5×8

17. (x-6)×7=2x

18. 3x+x=18

19. 0.8+3.2=7.2

20. 12.5-3x=6.5

21. 1.2(x-0.64)=0.5422. x+12.5=3.5x

23. 8x-22.8=1.2

24. 1\ 50x+10=60

25. 2\ 60x-30=20

其實你完全可以自己編題寫啊

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