17-31.2/(8.2-3.4)怎样简便计算?
问题描述:
17-31.2/(8.2-3.4)怎样简便计算?
答
17-31.2/(8.2-3.4)=17-31.2/4.8=17-6.5=10.5O(∩_∩)O谢谢,不过好像这不是简便计算吧?这样算也不麻烦啊那1.8/2.4*4.6呢?这样简便计算?1.8/2.4*4.6=18/24*4.6=3/4*4.6=3/2*2.3=6.9/2=69/20