12-9=
14-8=
12-4=
13-6=
7+8-6=
16-7=
11+5=
9+5=
12-7=
8+3-4=
16+3=
12-6=
18-8=
7+7=
13-9+3=
13-7=
5+8=
14+5=
15-9=
12+6-9=
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