1又1/2-1/12-1/20-1/30-1/42
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/28 14:12:03
![1又1/2-1/12-1/20-1/30-1/42](/uploads/image/z/5137824-48-4.jpg?t=1%E5%8F%881%2F2-1%2F12-1%2F20-1%2F30-1%2F42)
x)3|aoko"101I*+_`gC F@,6Ҧ@Hi3 mQgٚyvPllaNj3Xkxouӟmtb= #KK
1又1/2-1/12-1/20-1/30-1/42
1又1/2-1/12-1/20-1/30-1/42
1又1/2-1/12-1/20-1/30-1/42
1又1/2-1/2+1/3-1/3+1/4-1/5+1/5-1/6+1/6-1/7
1-1/7
=6/7
要答案还是要简便算法呀?