问题 解答题
计算:
1
15
+
4
15
+
7
15
=
1-
2
7
-
5
7
=
9
16
-
2
16
+
3
16
=
1-
2
9
-
4
9
=
答案

1
15
+
4
15
+
7
15
=
4
5
1-
2
7
-
5
7
=0
9
16
-
2
16
+
3
16
=
5
8
1-
2
9
-
4
9
=
1
3

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