1/2-1/6-1/12-1/20-1/30-1/42=?是6/7 还是1/7
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/24 06:26:11
1/2-1/6-1/12-1/20-1/30-1/42=?是6/7还是1/71/2-1/6-1/12-1/20-1/30-1/42=?是6/7还是1/71/2-1/6-1/12-1/20-1/30-1
1/2-1/6-1/12-1/20-1/30-1/42=?是6/7 还是1/7
1/2-1/6-1/12-1/20-1/30-1/42=?是6/7 还是1/7
1/2-1/6-1/12-1/20-1/30-1/42=?是6/7 还是1/7
1/2-1/6-1/12-1/20-1/30-1/42
=2/6-1/12-1/20-1/30-1/42
=1/4-1/20-1/30-1/42
=1/5-1/30-1/42
=1/6-1/42
=6/42
=1/7
怎么可能是6/7,越减越多？？？