Частина 1. Номер 58
4 + 9 = 13, 9 + 9 = 18, 8 + 3 = 11
7 + 4 = 11, 6 + 7 = 13
12 - 5 = 7, 18 - 9 = 9, 11 - 7 = 4
14 - 7 = 7, 16 - 8 = 8
4 + 9 = 13, 9 + 9 = 18, 8 + 3 = 11
7 + 4 = 11, 6 + 7 = 13
12 - 5 = 7, 18 - 9 = 9, 11 - 7 = 4
14 - 7 = 7, 16 - 8 = 8