2.398 Вычислите: б) (5−5)⋅38;

б) $$\left(\frac{54}{19} - 5 \frac{1}{38}\right) \cdot 38 = \left(\frac{54}{19} - \frac{191}{38}\right) \cdot 38 = \left(\frac{54 \cdot 2}{19 \cdot 2} - \frac{191}{38}\right) \cdot 38 = \left(\frac{108}{38} - \frac{191}{38}\right) \cdot 38 = -\frac{83}{38} \cdot 38 = -83$$ Ответ: -83