Решение:
- \( 47 + 27 : 9 = 47 + 3 = 50 \)
- \( 25 \cdot 2 = 50 \)
- \( 15 \cdot (63 - 57) = 15 \cdot 6 = 90 \)
- \( 7 + (12 \cdot 7) = 7 + 84 = 91 \)
- \( 60 : 3 : 2 = 20 : 2 = 10 \)
- \( 7 - 30 = -23 \)
- \( 15 \cdot 4 + 2 = 60 + 2 = 62 \)
Ответ: 50 = 50, 90 < 91, 10 > -23, 62