2⼀3×[(3⼀4-2⼀5)÷7⼀9] 脱式

2024-11-23 07:55:26
推荐回答(1个)
回答1:

2/3×[(3/4-2/指御5)÷7/9]
=2/3*(27/唯知岩猛喊28-18/35)
=9/14-12/35
=45/70-24/70
=3/10