3(x+y)-4(x-y)=4

问题描述:

3(x+y)-4(x-y)=4
x+y/2 + x-y/6 =1
自己检查一下 自己算了又算,总不对啊

-X+7Y=4
2X-Y/3=1
Y=27/41
X=25/41