|x-y+5|与|3-y|互为相反数,求x-y

麻烦啦!
2025-04-28 01:44:31
推荐回答(2个)
回答1:

|x-y+5|+|3-y|=0

y=3 x=-2

x-y=-2-3=-5

回答2:

绝对值互为相反数,只有零。。。剩下自己搞