{x:y=3:4 (x-y):(y-1)=1:2
问题描述:
{x:y=3:4 (x-y):(y-1)=1:2
答
4x=3y
2x-2y=y-1
=>
4x-3y=0(1)
2x-3y=-1(2)
(1)-(2)得
2x=1
x=1/2
y=2/3