第一题:5.6减九分之四加五分之二十二乘二点二五

2024-12-19 23:06:00
推荐回答(1个)
回答1:

5.6-4/9+22/5*5/2
=5.6-4/9+11
=4.4-4/9
=3+7/5-4/9
=3+43/45
=3又43/45