№2. Решите уравнение: a) 3,2 - x = -5,1; б) y + 3 3/14 = -1 4/21.

Решение: а) \(3.2 - x = -5.1\) \(-x = -5.1 - 3.2\) \(-x = -8.3\) \(x = 8.3\) б) \(y + 3\frac{3}{14} = -1\frac{4}{21}\) \(y + \frac{45}{14} = -\frac{25}{21}\) \(y = -\frac{25}{21} - \frac{45}{14}\) \(y = -\frac{50}{42} - \frac{135}{42}\) \(y = -\frac{185}{42} = -4\frac{17}{42}\)