Частина 2. Номер 355

12 · 2 + 12 = (10 + 2) · 2 + 12 = 20 + 4 + 12 = 36;

22 · 2 + 22 = (20 + 2) · 2 + 22 = 40 + 4 + 22 = 66;

12 · 3 – 13 = (10 + 2) · 3 – 13 = 30 + 6 – 13 = 23;

23 · 3 – 23 = (20 + 3) · 3 – 23 = 60 + 9 – 23 = 46;

14 · 4 + 36 = (10 + 4) · 4 + 36 = 40 + 16 + 36 = 92;

24 · 4 – 36 = (20 + 4) · 4 – 36 = 80 + 16 – 36 = 60.