(a) 10y - 7 =5y+3
y=
(b)18x-30=13x
x=
(c)11y-9=7y+19
y=
(d)6y-4
--------- =y+2
4
y=
數學題,求下我.....
2007-07-27 10:26 pm
回答 (6)
2007-07-27 10:32 pm
✔ 最佳答案
(a) 10y-7=5y+3=> 10y-5y=3+7
=> 5y=10
=> y=2
(b) 18x-30=13x
=> 18x-13x=30
=> 5x=30
=> x=6
(c) 11y-9=7y+19
=> 11y-7y=19+9
=> 4y=28
=> y=7
(d) (6y-4)/4=y+2
=> 6y-4=(y+2)*4
=> 6y-4=4y+8
=> 6y-4y=8+4
=> 2y=12
=> y=6
2007-07-27 10:56 pm
Ａ．２Ｂ．６Ｃ．７Ｄ．１
2007-07-27 10:39 pm
a) 10y-7=5y+3
10y-5y=3+7
5y=10
y=2
b)18x-30=13x
18x-13x=30
5x=30
x=6
c)11y-9=7y+19
11y-7y=19+9
4y=28
y=7
d)6y-4=y+24
6y-y=24+4
5y=28
y=5.6
10y-5y=3+7
5y=10
y=2
b)18x-30=13x
18x-13x=30
5x=30
x=6
c)11y-9=7y+19
11y-7y=19+9
4y=28
y=7
d)6y-4=y+24
6y-y=24+4
5y=28
y=5.6
參考: myself
2007-07-27 10:34 pm
a)5y=10
y=2
b)5x=30
x=6
c)4y=28
y=7
d)6y-4=4y+8
2y=12
y=6
y=2
b)5x=30
x=6
c)4y=28
y=7
d)6y-4=4y+8
2y=12
y=6
2007-07-27 10:33 pm
多做練習啦, 呢 d 題超簡單
d0 4y + 8 = 6y -4
2y = 4
y = 2
2007-07-27 14:34:37 補充：
4y 8 = 6y -42y = 12y = 6才對
d0 4y + 8 = 6y -4
2y = 4
y = 2
2007-07-27 14:34:37 補充：
4y 8 = 6y -42y = 12y = 6才對
2007-07-27 10:29 pm
A. 10y-5y=3+7
5y=10
y=2
B.18x-13x=30
5x=30
x=6
C.11y-7y=19+9
4y=28
y=7
D.唔明你打乜
5y=10
y=2
B.18x-13x=30
5x=30
x=6
C.11y-7y=19+9
4y=28
y=7
D.唔明你打乜
收錄日期: 2021-04-13 14:01:56
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