數學功課----------6年級方式程問題..煩死*●*

2007-05-15 1:10 am
要列式

1:A+0.3A=7-0.5 A=

2: 15=P+0.25P P=

2
3: 12+6S=- S+20 S=
3
4 : 3A /5=9+A/5 A=

5:17Y=6Y+0.33 Y=

6: 44= 6A+4A/3 A=

7: 9E=4E+7.5 E=


THX~~~~~~~~~~~~~~~~~~~~~~~

回答 (6)

2007-05-15 1:21 am
✔ 最佳答案
1:
A+0.3A=7-0.5
1.3A = 6.5
A = 5

2:
15=P+0.25P
1.25P = 15
P = 6


3:
12+6S=2 / 3 S+20
36 + 18S = 2S + 60
16S = 24
S = 3 / 2


4 :
3A /5=9+A/5
0.6A = 9 + 0.2A
0.4A = 9
A = 22.5


5:
17Y=6Y+0.33
11Y = 0.33
Y = 0.03


6:
44= 6A+4A/3
44 = 22A / 3
132 = 22A
A = 6


7:
9E=4E+7.5
5E = 7.5
E = 1.5
2007-05-15 1:40 am
1: A+0.3=7-0.5
A+0.3=6.5
A=6.5-0.3
A=6.2

2: 15=P+0.25P
15=1.25P
15/1.5=P
10=P
P=10

3: 12+6S=- S+20
12+6S+S=20
12+7S=20
7S=20-12
7S=8
S=8/7

4: 3A /5=9+A/5
3A=9+A/5 X 5
3A=9+A
3A-A=9
2A=9
A=4.5

5: 17Y=6Y+0.33
17Y-6Y=0.33
11Y=0.33
Y=0.03

6 44=6A+4A/3
44 X 3=10A
132=10A
13.2=A
A=13.2

7: 9E=4E+7.5
9E-4E=7.5
5E=7.5
E=1.5
2007-05-15 1:38 am
(1)

A+0.3A=7-0.5
1.3A = 6.5
A = 6.5/1.3
A= 5

(2)
15=P+0.25P
1.25P = 15
P=15/1.25
P=12

(3)
12+6S=- S+20
6S+S = 20-12
7S=8
S=8/7
S=1(1/7)

(4)
3A /5=9+A/5
(3/5)A - (1/5)A = 9
(2/5)A =9
A= 9X5/2 =22.5

(5)
17Y=6Y+0.33
17Y - 6Y = 0.33
11Y = 0.33
Y= 0.33/11
Y=0.03

(6)
44= 6A+4A/3
6A + (4/3)A =44
(22/3) A =44
A = 44 X (3/22)
A=6

(7)
9E=4E+7.5
9E - 4E= 7.5
5E =7.5
E=7.5/5
E=1.5
2007-05-15 1:28 am
1: A+0.3A=7-0.5A A=?
1A+0.3A=7-0.5A
1.3A=7-0.5A
1.3A+0.5A=7
1.8A=7
A=7/1.8
A=3.89

2:15=P+0.25P P=?
15=1P+0.25P
15=1.25P
P=15/1.25
P=12



5:17Y=6Y+0.33 Y=?
17Y-6Y=0.33
11Y=0.33
Y=0.33/11
Y=0.03

6:44=6A+4A/3 A=?
44*3=6A+4A
132=10A
A=132/10
A=13.2

7:9E=4E+7.5 E=?
9E-4E=7.5
5E=7.5
E=7.5/5
E=1.5
2007-05-15 1:23 am
六年級升中啦,識用電腦唔識計算好收家,比人笑死啊.
呢D數,將相同既放埋一面,再除,ok

1.A+0.3A=7-0.5
    1.3A=6.5
       A=5
2.    15=P+0.25P
      15=1.25P
       P=12
3. 12+6S=-S+20
      7S=8
       S=8/7
4.  3A/5=9+A/5<---兩面都係5做分母,可直接消除
      3A=9+A
      2A=9
       A=4.5
5.   17Y=6Y+0.33
     11Y=0.33
       Y=0.33/11
6.    44=6A+4A/3
     132=10A
       A=13.2
7.    9E=4E+7.5
      5E=7.5
       E=7.5/5
       E=1.5
 
參考: 自己
2007-05-15 1:22 am
1:A+0.3A=7-0.5
10A+3A=10x6.5
13A=65
A=5

2: 15=P+0.25P
1500 =100P+25P
1500=125P
P=12


3: 12+6S= -S+20
7S=20-12
7S=8
S=8/7 (題目係唔係錯左,小學野多數都除得盡)


4 : 3A /5=9+A/5
3A=45+A
2A=45
A=45/2
A=22.5 (題目係唔係錯左,小學野多數都除得盡)

5: 17Y=6Y+0.33
11Y=0.33
Y=0.03


6: 44= 6A+4A/3
132=18A+4A
132=22A
A=6


7: 9E=4E+7.5
5E=7.5
E=1.5


收錄日期: 2021-04-12 21:57:10
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070514000051KK02572

檢視 Wayback Machine 備份