B.2: -1 + 4/11, B.3: -1 + 1/6

**Решение:** **B.2:** \[-1 + \frac{4}{11} = -\frac{11}{11} + \frac{4}{11} = -\frac{7}{11}\] **B.3:** \[-1 + \frac{1}{6} = -\frac{6}{6} + \frac{1}{6} = -\frac{5}{6}\] **Ответ:** B.2: -7/11, B.3: -5/6