15.8-7⼀8+1⼀5-11⼀18=? 用简便计算

2025-01-01 11:49:38
推荐回答(1个)
回答1:

15.8-7/8+1/5-11/18
=(15.8+1/5)-(7/8+11/18)
=16-1
=15