5分之4x-y+6分之5y-2x=?

问题描述:

5分之4x-y+6分之5y-2x=?


(4x-y)/5+(5y-2x)/6
=1/30*[6(4x-y)+5(5y-2x)]
=1/30*(24x-6y+25y-10x)
=1/30*(14x+19y)
=7x/15+19y/30哦,还有一个是这样的
5分之4x-y+6分之5y-2x=0,问x、y=?帮一下忙啦,谢谢了

(4x-y)/5+(5y-2x)/6
=1/30*[6(4x-y)+5(5y-2x)]
=1/30*(24x-6y+25y-10x)
=1/30*(14x+19y)=0
14x+19y=0
y=-14x/19
如果没有其他条件的话是没法求出具体的x、y=?