(1/2-1/4)÷(1-3/4*4/5)怎么做?
题目
(1/2-1/4)÷(1-3/4*4/5)怎么做?
还有1-(5/7+3/14÷3/4)*2/7
答案
(1/2-1/4)÷(1-3/4*4/5) =(2/4-1/4)÷(1-3/5) =(1/4)÷(2/5) =(1/4)*(5/2) =5/8 1-(5/7+3/14÷3/4)*2/7 =1-(5/7+(3/14)*(4/3))*2/7 =1-(5/7+2/7)*2/7 =1-2/7 =5/7
希望采纳
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
最新试题
热门考点