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15 questions
-18 -6
3
-3
-12
-24
(-2 ) -8
-6
6
-10
10
(-9) + 10
1
-1
2
-2
-1 + 1 =
-2
2
0
1
-1
-1 + (-1) =
2
1
0
-1
-2
3 + (-4) =
-2
-1
0
1
2
5 + (-6) =
-11
-1
1
11
-10 + 11 =
-21
-1
1
21
1
-1
7
-7
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