1/2-1/6-1/12-1/20-1/30-1/42=?是6/7 还是1/7
来源:学生作业学帮网 编辑:学帮网 时间:2024/06/03 10:26:19
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???
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来源:学生作业学帮网 编辑:学帮网 时间:2024/06/03 10:26:19
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???