85 - 13 =72
89 - 81 =8
78 - 62 =16
52 - 17 =35
30 + 55 =85
99 - 48 =51
78 + 20 =98
31 - 14 =17
79 + 20 =99
20 + 42 =62
77 - 38 =39
88 - 63 =25
55 + 43 =98
22 - 19 =3
14 + 58 =72
19 + 79 =98
24 + 30 =54
52 - 10 =2
85 - 13 =72
89 - 81 =8
78 - 62 =16
52 - 17 =35
30 + 55 =85
99 - 48 =51
78 + 20 =98
31 - 14 =17
79 + 20 =99
20 + 42 =62
77 - 38 =39
88 - 63 =25
55 + 43 =98
22 - 19 =3
14 + 58 =72
19 + 79 =98
24 + 30 =54
52 - 10 =2
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