Вычислите: $$\frac{-3.48}{4.2} + \frac{49.49}{4.9}$$

$$\frac{-3.48}{4.2} + \frac{49.49}{4.9} = -0.82857 + 10.1 = 9.27143 \approx 9.27$$ Альтернативное решение: $$\frac{-3.48}{4.2} + \frac{49.49}{4.9} = \frac{-348}{420} + \frac{4949}{490} = \frac{-58}{70} + \frac{4949}{490} = \frac{-58 \cdot 7}{490} + \frac{4949}{490} = \frac{-406 + 4949}{490} = \frac{4543}{490} = 9.271428571428571 \approx 9.27$$