2又1/7-3又1/5+3又1/6+5又1/5-7又1/7快.
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 08:16:06
![2又1/7-3又1/5+3又1/6+5又1/5-7又1/7快.](/uploads/image/z/7737316-52-6.jpg?t=2%E5%8F%881%2F7-3%E5%8F%881%2F5%2B3%E5%8F%881%2F6%2B5%E5%8F%881%2F5-7%E5%8F%881%2F7%E5%BF%AB.)
2又1/7-3又1/5+3又1/6+5又1/5-7又1/7快.
2又1/7-3又1/5+3又1/6+5又1/5-7又1/7
快.
2又1/7-3又1/5+3又1/6+5又1/5-7又1/7快.
2又1/7-3又1/5+3又1/6+5又1/5-7又1/7
=(2又1/7-7又1/7)+(5又1/5-3又1/5)+3又1/6
=-5+2+3又1/6
=1/6
=(2-3+3+5-7)+(1/7-1/5+1/6+1/5-1/7) =0+1/6 =1/6