33除以中括号小括号1.3 1.2小括弧乘以0.6中括号怎样简便怎样算?

2025-02-23 10:42:39
推荐回答(1个)
回答1:

9.6÷[(2.05-1.97)×0.4]
=9.6÷[0.8×0.4] (这步开始简便)
=9.6÷0.8÷0.4
=12÷0.4
=30