2003/10/17 (金) 11:38:11
◆
▼
◇
[mirai]
aX+bY=c dX+eY=f X=(c-bY)/a d(c-bY)/a+eY=f c-bY+ae/dY=fd/a ae/d-bY=fd/a-c Y=(fd/a-c)/(ae/d-b)