40
42 – 6 =
36 42
6
36
24
50
54 – 8 =
46 54
8
46
44
38 – 7 =
31 38
7
31
45 – 9 =
36 45
9
54
60
68 – 9 =
59 68
59
81
53 – 7 =
46 53
34
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