4.2⼀3.5咋么简便计算???

2025-03-03 20:45:51
推荐回答(2个)
回答1:

4.2/3.5=4.2÷3.5=42/10÷35/10=42/10×10/35=42/35=6/5

回答2:

=(0.7×6)/(0.7×5)
=6/5