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Difficult Subtraction A
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A
B
17 - 8
9
15 - 8
7
11 - 3
8
11 - 7
4
12 - 4
8
11 - 9
2
13 - 7
6
12 - 7
5
14 - 6
8
13 - 5
8
11 - 6
5
12 - 9
3
10 - 8
2
10 - 4
6
12 - 6
6
14 - 7
7
16 - 8
8
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