數學高手 (簡易方程)

2011-04-21 6:50 pm
1.4a+3=5a-2 9.0.8+5z=4.8+z

2.1.6+5m=2.6 10.7-6y=2y+0.4

3.6.3-2y+4.9 11.0.6X32=21-2y

4.20y-6=12+14y

5.14y-8=17+9y

6.8.5-6+y=3.8

7.3x+25=5x-15

8.4(2.8-3x)=2.8

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即成為最佳解答者

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更新1:

12.0.5(a+4)=(a+4)X10%

回答 (6)

2011-04-21 8:37 pm
✔ 最佳答案
1. a = 5

2. m = 1/5

3. y = 0.7

4. y = 3

5. y = 5

6. y = 1.3

7. x = 20

8. x = 0.7

9. z = 1

10. y = 0.825

11. y = -0.9

2011-04-21 22:36:57 補充:
12.
a = -4

3.
無論是 6.3 = 2y + 4.9 或者 6.3 - 2y = 4.9
y = 0.7

2011-04-22 22:35:08 補充:
第12題是方程。
0.5(a + 4) = (a + 4) x 10%
0.5a + 2 = 0.1a + 0.4
0.4a = -1.6
a = -4
參考: sioieng, sioieng, sioieng
2011-05-02 6:14 am
002 答案可以睇完答案後錯完又改,又沒有答12題,居然咁多「人」投票?有冇分身咖?
2011-05-01 3:36 am
1. 4a+3=5a-2,-a=-5,a=5
2. 1.6+5m=2.6,5m=1,m=0.2
3. 6.3-2y+4.9,-2y=-1.4,y=0.7
4. 20y-6=12+14y,6y=18,y=3
5. 14y-8=17+9y,5y=25,y=5
6. 8.5-6+y=3.8,2.5+y=3.8,y=1.3
7. 3x+25=5x-1,-2x=-26,x=13
8. 4(2.8-3x)=2.8,11.2-12x=2.8,-12x=-8.4,x=0.7
9. 0.8+5z=4.8+z,4z=4,z=1
10. 7-6y=2y+0.4,-8y=-6.6,y=0.825
11. 0.6X32=21-2y,19.2=21-2y,-1.8=-2y,y=0.9
12. 0.5(a+4)=(a+4)X10%,0.5a+2=0.1a+0.4,0.4a=-1.6,a=-4

最後提醒你,結果不重要,重要的昰過程
希望你看到這過程之後,你就會算了




2011-04-30 21:47:04 補充:
我算錯了
7. 3x+25=5x-15
-2x=-40,x=20
2011-04-28 3:24 am
1. a = 5

2. m = 0.2

3. y = 0.7

4. y = 3

5. y = 5

6. y = 1.3

7. x = 20

8. x = 0.7

9. z = 1

10. y = 0.825

11. y = 0.9

12. -0.4 ( - = 負)
參考: me
2011-04-22 3:21 am
1. a = 5

2. m = 0.2

3. y = 0.7

4. y = 3

5. y = 5

6. y = 1.3

7. x = 20

8. x = 0.7

9. z = 1

10. y = 0.825

11. y = -0.9

12.不是方程


2011-04-21 19:25:45 補充:
我打錯咗11題

係0.9

2011-04-22 20:50:07 補充:
12. 負4
參考: 我
2011-04-21 8:38 pm
1. 4a+3=5a-2
答:-a=-5
a=5
2. 1.6+5m=2.6
答:5m=1
m=0.2
3. 6.3-2y+4.9
答:6.3-2y=-4.9
2y=-11.2
y=5.6
4.20y-6=12+14y
答: 6y=18
y=3
5.14y-8=17+9y
答: 5y=25
y=5
6.8.5-6+y=3.8
答: -6+y=-4.7
y=1.3
7.3x+25=5x-15
答: -2x=-40
x=20
8.4(2.8+3x)=2.8
答:11.2-12x=2.8
-12x =-8.4
x=-0.7
9.0.8+5z=4.8+z
答: 4z=4
z=1
10.7-6y=2y+0.4
答: -8y=-6.6
y=0.825
11.0.6X32=21-2y
答: 19.2=21-2y
2y=1.8
y=0.9

2011-04-21 12:43:07 補充:
sorry-_-第8題計錯左..
正確係:
8.4(2.8+3x)=2.8
答:11.2-12x=2.8
-12x =-8.4
x=0.7

2011-04-21 12:50:05 補充:
sorry-_-第3題打流左小小野;
正確係:
3. 6.3-2y+4.9
答:6.3-2y=-4.9
-2y=-11.2
y=5.6
參考: 自己計


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