简便计算：(0.39/3-0.1)/(1-2/3)

分类: 作业答案 • 2022-01-04 12:39:12

问题描述：

答

(0.39/3-0.1)/(1-2/3)
上下同乘以3
=3(0.39/3-0.1)/3(1-2/3)
=(0.39-0.3)/(3-2)
=0.09