Question

12道六年级数学解方程（十分感谢）

21分之10x÷3分之2=7分之3
x-3分之1x-2分之1x=1
90x-53x=740
8.5x-6.9x=4
3.3x-200=0.2x+110
1.02+0.4x+2.6x=3.42
8.9x-67=4.5x+65
6x-58=3x+14
10x-20=5x+80
6x+5=10x-3
420-1.4x=9.8x-28
8.2x+5.4x=272

Answer 1

1. x=3/7*2/3*21/10=3/5

2. x(1-1/2-1/3)=1; 辩羡x/6=1; x=6

3. 37x=740; x=20

4. 1.6x=4 ;  x=2.5

5. 3.3x-0.2x=110+200; 3.1x=310; 吵碧x=100

6. 1.02+3x=3.42 ;  3x=3.42-1.02 ; 3x=2.4 ; x=0.8

7. 8.9x-4.5x=65+67; 4.4x=132; x=30

8. 6x-3x=14+58; 携碰拍3x=72; x=24

9. 10x-5x=80+20; 5x=100; x=20

10. 10x-6x=5+3; 4x=8; x=2

11. 9.8x+1.4x=420+28; 11.2x=448; x=40

12. 13.6x=272; x=20

追问

谢谢老师!

追答

好好学习， 请采纳~

Answer 2

90x-53x=740
37x=740
x=740/37=20

8.5x-6.9x=4
1.6x=4
x=2.5

3.3x-200=0.2x+110
(3.3-0.2)x=110+200
3.1x=310
x=100

1.02+0.4x+2.6x=3.42
3x=3.42-1.02
3x=2.4
x=0.8

剩下自银返己算，当个好孩乱模子哗搏缓

Answer 3

1. x=3/7*2/3*21/10=3/5

2. x(1-1/2-1/3)=1; x/6=1; x=6

3. 37x=740; x=20

4. 1.6x=4 ;  x=2.5

5. 3.3x-0.2x=110+200; 3.1x=310; x=100

6. 1.02+3x=3.42 ; 前尘 3x=3.42-1.02 ; 3x=2.4 闹悔颂; x=0.8

7. 8.9x-4.5x=65+67; 4.4x=132; x=30

8. 6x-3x=14+58; 3x=72; x=24

9. 10x-5x=80+20; 5x=100; x=20

10. 10x-6x=5+3; 液郑4x=8; x=2

11. 9.8x+1.4x=420+28; 11.2x=448; x=40

12. 13.6x=272; x=20好烦！

Answer 4

1. 0.6
2. 6
3. 20
4. 2.5
5. 100
6. 0.8
7. 30
8. 24
9. 40
10. 20

Answer 5

1