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3
5
×
1
7
×
6
13
+
5
7
×
1
5
×
3
13
+
1
13
×
3
7
×
2
5
人气:227 ℃ 时间:2020-02-06 09:43:41
解答
3
5
×
1
7
×
6
13
+
5
7
×
1
5
×
3
13
+
1
13
×
3
7
×
2
5

=
3
5
×
1
7
×
6
13
+
3
5
×
1
7
×
5
13
+
3
5
×
1
7
×
2
13

=
3
5
×
1
7
×(
6
13
+
5
13
+
2
13
),
=
3
35
×1,
=
3
35
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