> 数学 >
1
2
1
3
1
4
1
6
1
8
1
12
中,哪几个分数相加的和为1?
人气:440 ℃ 时间:2020-01-19 22:46:54
解答
1
2
=
12
24

1
3
=
8
24

1
4
=
6
24

1
6
=
4
24

1
8
=
3
24

1
12
=
2
24

12
24
+
8
24
+
4
24
=
24
24
=1;所以,
1
2
+
1
3
+
1
6
=1;
12
24
+
6
24
+
4
24
+
2
24
=
24
24
=1;所以,
1
2
+
1
4
+
1
6
+
1
12
=1.
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