Решение примеров:

1. $$14.3 \cdot 0.6 - 5.7 \cdot 1.4 = 8.58 - 7.98 = 0.6$$
2. $$(54 - 23.42) \cdot 0.08 = 30.58 \cdot 0.08 = 2.4464$$
3. $$(4.125 - 1.6) \cdot (0.12 + 7.3) = 2.525 \cdot 7.42 = 18.7355$$
4. $$(139 - 23.48) : 38 + 4.35 \cdot 18 = 115.52 : 38 + 4.35 \cdot 18 = 3.04 + 78.3 = 81.34$$
5. $$(1.87 + 1.955) : 0.85 - (3 \cdot 1.75 - 2.5) \cdot 1.62 = 3.825 : 0.85 - (5.25 - 2.5) \cdot 1.62 = 4.5 - 2.75 \cdot 1.62 = 4.5 - 4.455 = 0.045$$
6. $$1.24 : 3.1 + 12 : 0.25 - 2 : 25 + 18 : 0.45 = 0.4 + 48 - 0.08 + 40 = 88.32$$
7. $$52 - (15.54 : 1.48 + 3.4) \cdot 2.8 = 52 - (10.5 + 3.4) \cdot 2.8 = 52 - 13.9 \cdot 2.8 = 52 - 38.92 = 13.08$$

Ответы:

• 1) 0.6
• 2) 2.4464
• 3) 18.7355
• 4) 81.34
• 5) 0.045
• 6) 88.32
• 7) 13.08