40 + 50 =
7 + 3 =
9 + 6 =
40 + 30 =
60 + 30 =
11 + 9 =
7 + 8 =
20 + 30
12 + 6 =
14 + 6
30 + 40
8 + 7
9 + 11
6 + 14 =
6 + 12
6 + 9
3 + 7
30 + 20 =
50 + 40
30 + 60
