若2x-3y=0(x≠0),试求(x+y)/(x-y)的值.
问题描述:
若2x-3y=0(x≠0),试求(x+y)/(x-y)的值.
要有过程,谢谢,快点!
答
2x-3y=0 ===>y=2x/3
(x+y)/(x-y)
=(x+2x/3)/(x-2x/3)
=(5x/3)/(x/3)
=5