Частина 1. Номер 309

6 · 8 – 12 = 48 – 12 = 36;

6 · 4 + 64 = 24 + 64 = 88;

54 : 6 · 5 = 9 · 5 = 45;

12 : 6 · 2 = 2 · 2 = 4;

6 · 9 – 36 = 54 – 36 = 18;

6 · 7 – 16 = 42 – 16 = 26;

(40 + 8) : 6 = 48 : 6 = 8;

(36 – 6) : 6 = 30 : 6 = 5.