18.9-18.9/1.4怎么简便运算
问题描述:
18.9-18.9/1.4怎么简便运算
答
18.9-18.9/1.4=18.9-18.9*(10/14)=18.9*(1-5/7)=18.9*(2/7)=5.4
18.9-18.9/1.4怎么简便运算
18.9-18.9/1.4=18.9-18.9*(10/14)=18.9*(1-5/7)=18.9*(2/7)=5.4