Correction :

63 : 9 = 7	17 + 14 = 31
45 - 22 = 23	7 + 23 = 30
1 + 4 = 5	9 + 10 = 19
14 + 7 = 21	35 - 11 = 24
3 + 3 = 6	11 + 11 = 22
38 - 20 = 18	25 - 16 = 9
39 - 18 = 21	15 - 14 = 1
17 + 10 = 27	22 + 23 = 45
34 - 17 = 17	24 - 19 = 5
23 - 15 = 8	24 - 5 = 19