7
+
21
=
31
+
43
=
54
+
2
=
12
+
0
=
18
+
49
=
15
+
63
=
75
+
22
=
15
+
47
=
49
+
40
=
7
+
13
=
45
+
16
=
35
+
41
=
3
+
0
=
13
+
68
=
8
+
4
=
25
+
72
=
21
+
7
=
19
+
17
=
3
+
5
=
13
+
3
=