题目

计算
2(x+y)-3/4(x-y)+1/2(x+y)=3/4(x-y)
不是求x和y的值，是计算这到题目

提问时间：2020-11-15

答案

2(x+y)-3/4(x-y)+1/2(x+y)=3/4(x-y
2(x+y)+1/2(x+y)=3/4(x-y)+3/4(x-y)
3/2(x+y)=3/2(x-y)
3x+3y=3x-3y
y=0
回答者：819211270 - 实习生 一级 2009-11-4 19:06
2(x+y)-3/4(x-y)+1/2(x+y)=3/4(x-y)
2(x+y)+1/2(x+y)=3/4(x-y)+3/4(x-y)
3/2(x+y)=3/2(x-y)
3x+3y=3x-3y
且y=0,x=0