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20 questions
7 + (-13)
-6
6
-20
20
-4 - 16
-12
12
3 - 11
-8
8
-14
14
-56 / -7
392
-392
-9 + (-9)
0
18
-18
-6 - (-8)
-2
2
-6 x (-12)
-72
72
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