2+3
5
5-1
4
1+1
2
10+7
17
40-10
30
4+8
12
7-2
10+2
20+10
27-10
5+6
11
5+9
14
9+10
19
36-10
16
7+8
15
1
6-3
3
32+10
42
18-10
8
9+3
10-6
20+20
40
50+10
60
65-10
55
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