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What is 12-12=?
12
144
24
0
15+5=?
5
75
20
15
What is 15-13= ?
28
2
1.1538461
195
67+8=
89
79
75
0
17+12=
57
12
17
29
34-21=
21
12
55
34
98+2=
99
100
96
97
8+5=
13
9
8
5
43+12=
65
55
78
49
23+12=
55
45
35
15
95+5=
0
600
200
100
59-35=
24
8
78
56
53-21=
769
32
60
58
6+2=
3
12
8
62
8+9=
9
8
17
72
3-2=
6
1.5
5
1
