4个回答
展开全部
由y=3xy+x可得:x-y=-3xy
2x+3xy-2y/x-2xy-y
=2(x-y)+3xy/(x-y)-2xy
=(-6xy+3xy)/(-3xy-2xy)
=-3xy/-5xy
=3/5
2x+3xy-2y/x-2xy-y
=2(x-y)+3xy/(x-y)-2xy
=(-6xy+3xy)/(-3xy-2xy)
=-3xy/-5xy
=3/5
来自:求助得到的回答
本回答被提问者采纳
355
已赞过
已踩过<
评论(15)
举报
收起
你对这个回答的评价是?
展开全部
y=3xy+x
则x-y=-3xy
2x+3xy-2y/x-2xy-y
=2(x-y)+3xy/(x-y)-2xy
=-6xy+3xy/-3xy-2xy
=-3xy/-5xy
=3/5
则x-y=-3xy
2x+3xy-2y/x-2xy-y
=2(x-y)+3xy/(x-y)-2xy
=-6xy+3xy/-3xy-2xy
=-3xy/-5xy
=3/5
展开全部
由y=3xy+x可得:x-y=-3xy
2x+3xy-2y/x-2xy-y
=2(x-y)+3xy/(x-y)-2xy
=(-6xy+3xy)/(-3xy-2xy)
=-3xy/-5xy
=3/5
2x+3xy-2y/x-2xy-y
=2(x-y)+3xy/(x-y)-2xy
=(-6xy+3xy)/(-3xy-2xy)
=-3xy/-5xy
=3/5
2013-03-29
展开全部
由y=3xy+x可得:x-y=-3xy
2x+3xy-2y/x-2xy-y
=2(x-y)+3xy/(x-y)-2xy
=(-6xy+3xy)/(-3xy-2xy)
=-3xy/-5xy
=3/5
2x+3xy-2y/x-2xy-y
=2(x-y)+3xy/(x-y)-2xy
=(-6xy+3xy)/(-3xy-2xy)
=-3xy/-5xy
=3/5
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询