14. Решите уравнение а)\(x: 8 = 15:30\), б) \(\frac{x}{7} = \frac{5}{2}\)

а) \(x: 8 = 15:30\) \(x : 8 = \frac{15}{30}\) \(x : 8 = \frac{1}{2}\) \(x = 8 \cdot \frac{1}{2}\) \(x = 4\) б) \(\frac{x}{7} = \frac{5}{2}\) \(x = \frac{5}{2} \cdot 7\) \(x = \frac{35}{2}\) \(x = 17,5\) Ответ: а) 4; б) 17,5