x/3-y/2=6 { x-2/y=9

问题描述:

x/3-y/2=6 { x-2/y=9
x/3-y/2=6
x-2/y=9

{x/3-y/2=6
[x-2/y=9
两式相减可得
2/3x=3
x=4.5
代入可得
y=-9/4
所以
[x=9/2
y=-9/4