Correction :

12 + 24 = 36	9 + 7 = 16
9 - 7 = 2	10 - 1 = 9
9 + 17 = 26	15 + 22 = 37
5 + 1 = 6	21 + 16 = 37
37 - 21 = 16	7 + 15 = 22
14 + 15 = 29	40 - 19 = 21
3 + 4 = 7	0 + 14 = 14
29 - 18 = 11	13 - 4 = 9
24 + 18 = 42	31 - 24 = 7
36 - 18 = 18	10 : 2 = 5