Vertical · Série 66

20 problems
1
5 - 2 =
2
7 - 6 =
3
8 - 7 =
4
8 - 5 =
5
6 - 3 =
6
2 - 1 =
7
2 - 1 =
8
7 - 1 =
9
9 - 4 =
10
6 - 4 =
11
7 - 3 =
12
6 - 3 =
13
9 - 2 =
14
3 - 1 =
15
4 - 1 =
16
4 - 1 =
17
4 - 3 =
18
5 - 4 =
19
9 - 6 =
20
2 - 1 =
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