Correction :

43 - 22 = 21	20 + 23 = 43
2 × 3 = 6	9 + 1 = 10
21 + 11 = 32	25 - 4 = 21
9 + 4 = 13	20 + 3 = 23
14 + 22 = 36	8 + 7 = 15
8 + 16 = 24	12 + 15 = 27
22 + 1 = 23	1 + 11 = 12
6 + 14 = 20	18 + 17 = 35
19 + 4 = 23	5 - 5 = 0
10 + 22 = 32	28 - 24 = 4