Correction :

32 - 17 = 15	23 - 2 = 21
3 × 6 = 18	3 + 21 = 24
9 + 17 = 26	11 + 10 = 21
18 + 24 = 42	1 + 2 = 3
3 + 21 = 24	21 + 17 = 38
14 - 4 = 10	10 + 8 = 18
24 + 21 = 45	9 + 3 = 12
24 - 21 = 3	9 + 13 = 22
10 : 2 = 5	9 + 23 = 32
20 + 13 = 33	35 - 13 = 22