9+11
20
543 + 111
654
341-213
128
5-3
2
541+987
1,528
15+16
31
24 + 9
33
12-3
1,987+342
2,329
19,321-6,540
12,781
22
132+54
186
18 - 7
11
29 + 7
36
123,897- 12,630
111,267
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