若a+b⼀b=3⼀2,则a+2b⼀a-b⼀等于多少

2025-03-20 15:09:20
推荐回答(1个)
回答1:

a+b/b=3/2
a+b=1.5b
a=0.5b
a+2b/a-b/
=(0.5b+2b)/(0.5b-b)
=2.5b/(-0.5b)
=-5