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10 + 3 =
13
6 + 8 =
14
9 - 3 =
6
10 - 7 =
3
14 + 5 =
19
18 - 7 =
11
7 + 9 =
16
8 + 11 =
19
6 + 4 =
10
10 6 =
4
15 - 9 =
6
13 - 5 =
8
? + 5 = 12
7
11 + ? = 17
6
? - 7 = 4
11
12 - ? = 9
3
