[2⼀3-(3⼀5-1⼀6)]÷7⼀3简便计?

2025-03-01 04:34:00
推荐回答(1个)
回答1:

[2/3-(3/5-1/6)]÷7/3
=(2/3-3/5+1/6)x3/7
=(2/3+1/6-3/5)x3/7
=(5/6-3/5)x3/7
=(25/30-18/30)x3/7
=7/30x3/7
=1/10