七上(-21/4)-(+103/12)-(+12/7)-(+15/4)-(+2/7)简便运算简便运算(要过程!)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/22 00:12:32
![七上(-21/4)-(+103/12)-(+12/7)-(+15/4)-(+2/7)简便运算简便运算(要过程!)](/uploads/image/z/1083750-6-0.jpg?t=%E4%B8%83%E4%B8%8A%28-21%2F4%29-%28%2B103%2F12%29-%28%2B12%2F7%29-%28%2B15%2F4%29-%28%2B2%2F7%29%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%EF%BC%88%E8%A6%81%E8%BF%87%E7%A8%8B%21%EF%BC%89)
七上(-21/4)-(+103/12)-(+12/7)-(+15/4)-(+2/7)简便运算简便运算(要过程!)
七上(-21/4)-(+103/12)-(+12/7)-(+15/4)-(+2/7)简便运算
简便运算(要过程!)
七上(-21/4)-(+103/12)-(+12/7)-(+15/4)-(+2/7)简便运算简便运算(要过程!)
(-21/4)-(+103/12)-(+12/7)-(+15/4)-(+2/7)
=(-21/4-15/4)-103/12-(12/7+2/7)
=-9-103/12-2
=-11-103/12
=235/12