cad2007许可证过期:-_- ???!!!
来源:百度文库 编辑:查人人中国名人网 时间:2024/04/27 15:00:48
15/x + 15/y = 1/6
12/x + 20/y = 1/5
x = ??? y = ???
12/x + 20/y = 1/5
x = ??? y = ???
15/x + 15/y = 1/6
12/x + 20/y = 1/5
1/x+1/y=1/90
0.6/x+1/y=1/100
0.4/x=1/900
x=360
1/y=1/90-1/360=1/120
y=120
x=360,y=120
令1/x=a,1/y=b,
得,a,b然后得x,y
x=360
y=120