simultaneous equation

Ans : m = 6, n = -3

m/2 + n/3 = 2-----------------(1)
(1) x 6
3m + 2n = 12
3m = 12 - 2n
m = 4 - (2n/3)-----------------(3)

Put (3) into (2)
-5n = 4[ 4 - (2n/3) ] - 9
-5n = 16 - (8n/3) - 9
-5n = 7 - (8n/3)
Whole equation times 3
-15n = 21 - 8n
-7n = 21
n = -3

Put n = -3 into (3)
m = 4 - (2n/3)
m = 4 - ( -6/3)
m = 4 - ( -2 )
m = 6

As follow AS~~~~

圖片參考：http://e.imagehost.org/0753/ScreenHunter_06_Dec_24_22_45.gif


2008-12-24 22:49:51 補充：
更改!
http://e.imagehost.org/0605/ScreenHunter_06_Dec_24_22_45.gif