Частина 1. Номер 37
11 – 2 = 9, 11 – 5 = 6;
12 – 3 = 9, 12 – 6 = 6;
15 – 7 = 8, 14 – 8 = 6;
8 + 5 = 13, 5 + 9 = 14;
7 + 5 = 12, 8 + 9 = 17.
11 – 2 = 9, 11 – 5 = 6;
12 – 3 = 9, 12 – 6 = 6;
15 – 7 = 8, 14 – 8 = 6;
8 + 5 = 13, 5 + 9 = 14;
7 + 5 = 12, 8 + 9 = 17.