4. Решите уравнения: a) 7.148 - x = 3.14 - 2.111 б) x : 3.9 = 7 в) 64x = 108.8

Решение: a) \(7.148 - x = 3.14 - 2.111\) \(7.148 - x = 1.029\) \(x = 7.148 - 1.029\) \(x = 6.119\) б) \(x : 3.9 = 7\) \(x = 7 \times 3.9\) \(x = 27.3\) в) \(64x = 108.8\) \(x = \frac{108.8}{64}\) \(x = 1.7\) **Ответ:** a) 6.119 б) 27.3 в) 1.7