78-(72-62) ·4 37+ (25-15)・3 49-(64-44): 2

1. $$78-(72-62) \cdot 4 = 78 - 10 \cdot 4 = 78 - 40 = 38$$
2. $$37+ (25-15) \cdot 3 = 37 + 10 \cdot 3 = 37 + 30 = 67$$
3. $$49-(64-44): 2 = 49 - 20 : 2 = 49 - 10 = 39$$

Ответ: 38; 67; 39