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4 + 4 – 7
1
8 – 1 – 2
5
10 – 5 – 2
3
7 – 3 – 3
1
9 – 8 + 7
8
8-7
1
9-3
6
10-4+2-3
5
2+7-5+6
10
10-9+4+7
12
8+2-5
5
9-1-4+6
10
