呢題方程點計?!

5y=1/2x-1
y=3，求x
Given y =3,
5(3) = 1/(2x-1)
15 = 1/(2x-1)
2x-1 = 1/15
2x = 16/15
x = 8/15


Another case,
Given y =3,
5(3) = 1/2x -1
15 = 1/2x -1
16 = 1/2x
2x = 1/16
x = 1/32


2010-06-28 19:25:54 補充：
如果是(1/2)x ,,,,,他就寫 x/2 了-,-

解：把y=3代入原方程，得：
5×3=(1/2)x-1
(1/2)x=15+1
x=16×2
x=32

15=1(2x-1)
30x-15=1
30x =16
x=8/15

5y = 1/2x -1 when y=3

5(3) = 1/2x -1
15 = 1/2x -1
1/2x = 16
x = 32

2010-06-27 20:07:13 補充：
Sorry...
我假設....

5y = 1/2(x) -1

証明題主寫得唔好

http://hk.knowledge.yahoo.com/question/question?qid=7010062702822
Q.1

2010-06-27 20:24:42 補充：
Sorry, 眼花看錯了...