问题 解答题
口算.
1
3
+
1
4
=
1
5
+
1
6
=
9
10
+
1
10
=
1
14
+
1
14
2
7
+
2
7
=
5
6
-
1
6
=
13
14
-
3
14
=
9
9
-
5
5
=
答案

1
3
+
1
4
=
7
12
1
5
+
1
6
=
11
30
9
10
+
1
10
=1,
1
14
+
1
14
=
1
7
2
7
+
2
7
=
4
7
5
6
-
1
6
=
2
3
13
14
-
3
14
=
5
7
9
9
-
5
5
=0.

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