13
+
49
=
36
+
49
=
2
+
0
=
78
+
12
=
39
+
10
=
4
+
6
=
9
+
17
=
16
+
53
=
57
+
31
=
71
+
6
=
33
+
47
=
22
+
69
=
4
+
32
=
4
+
19
=
42
+
29
=
30
+
21
=
30
+
37
=
13
+
48
=
18
+
4
=
21
+
39
=