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9 + 5 =
14 - 5 =
8 + 9 =
17 - 9 =
6 + 7 =
13 - 7 =
7 + 4 =
11 - 7 =
9 + 3 =
12 - 3 =
9 + 6 =
15 - 9 =
9 + 11 =
20 - 11 =
8 + 6 =
14 - 8 =
7 + 8 =
15 - 7 =
9 + 9 =
18 - 9 =
12 + 5 =
17 - 5 =
7 + 11 =
18 - 7 =
10 + 8 =
18 - 8 =
11 + 6 =
17 - 11 =
9 + 4 =
13 - 9 =
8 + 12 =
20 - 8 =