一又1\/2÷(4\/5x25%+1\/4x1\/5)?
1又1\/2÷(4\/5x25%+1\/4x1\/5)=3\/2÷(4\/5x1\/4+1\/20)=3\/2÷(1\/5+1\/20)=3\/2÷1\/5 =15\/2
1\/2X1\/3+1\/3X1\/4+1\/4X1\/5+1\/5X1\/6+...+1\/99X1\/100=? 求解题过程,谢谢...
= 1\/(2 X 3) + 1\/(3 X 4) + 1\/(4 X 5) + ...+ 1\/(99 X 100)= (3 - 2)\/(2 X 3) + (4 - 3)\/(3 X 4) + (5 - 4)\/(4 X 5) + ...+ (100 - 99)\/(99 X 100)= (1\/2 - 1\/3) + (1\/3 - 1\/4) + (1\/4 - 1\/5) +...+ (1\/99 - 1\/...
1\/2除以( )乘以( )=4\/5 一定要看啊!
如果设括号里的数字为x 按你的题目思路就变成((1\/2)\/x)x=1\/2=4\/5了。。。是False的。。题目修改一下~~(1\/(2\/x))x=4\/5 x=±2sqrt(10)\/5 ∴(1\/(2\/(2sqrt(10)\/5)))*2sqrt(10)\/5 or(1\/(2\/(-2sqrt(10)\/5)))*-2sqrt(10)\/5 2°两个括号中的数字不同时~~...
4\/5x2\/3十2\/5x1\/3如何简算
先算4\/5*2\/3=8\/15,再算2\/5*1\/3=2\/15,把8\/15+2\/15=10\/15化简得2\/3
解方程1-4\/5x-1\/5=1\/2
回答:x=3\/8
简便计算:1又2\/5x2\/5除以1又4\/5
7\/5x2\/5x5\/9=14\/45 如果你认可我的回答,请及时点击【采纳为满意回答】按钮 如有问题,尽管提问.~~手机提问的朋友在客户端右上角评价点【满意】即可。~你的采纳是我前进的动力 ~~O(∩_∩)O,记得好评和采纳,互相帮助 来自数学无敌团的帮助~~~...
2\/5x-1\/4x=3\/5 解方程
2020-10-22 2\/5x+3\/4×2\/3=1 怎么解方程,急急急 在线等 2020-11-07 2\/5x-1\/3x=3\/10解方程 1 2020-01-23 1\/4x+1\/5x=3\/5解方程? 2 2017-01-06 3\/4x-2\/5x=1\/2解方程 3 2020-01-20 5x-3\/4x+2\/5x=10\/3解方程? 2019-07-27 1-4\/5x等于1\/3解方程 8 2020-01-27 ...
5又1\/2-(4\/5+3.6×1\/6)×1\/4 怎么简便计算?
5又1\/2-(4\/5+3.6×1\/6)×1\/4 =5.5-4\/5x1\/4-3.6x1\/4x1\/6 =5.5-1\/5-0.9x1\/6 =5.5-0.2-0.15 =5.15
1又1\/5x+2\/5x=4\/15解方程
8\/5x=4\/15 x=4\/15÷8\/5 x=1\/6