|1/2015-1/2014|+|1/2014-1/2013|-|1/2013-1/2015|怎么算
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:综合作业 时间:2024/06/24 01:50:32
|1/2015-1/2014|+|1/2014-1/2013|-|1/2013-1/2015|怎么算
![|1/2015-1/2014|+|1/2014-1/2013|-|1/2013-1/2015|怎么算](/uploads/image/z/16459906-58-6.jpg?t=%7C1%2F2015-1%2F2014%7C%2B%7C1%2F2014-1%2F2013%7C-%7C1%2F2013-1%2F2015%7C%E6%80%8E%E4%B9%88%E7%AE%97)
首先判断绝对值里面的为正数或者负数,然后展开绝对值,1/2015比1/2014小,1/2014比1/2013小,1/2013比1/2015大,所以展开绝对值后原式变为|1/2015-1/2014|+|1/2014-1/2013|-|1/2013-1/2015|=1/2014-1/2015+1/2013-1/2014-1/2013+1/2015=0