17) (17/26 + 11/13) * 17/6

17) \((\frac{17}{26} + \frac{11}{13}) \cdot \frac{17}{6} = (\frac{17}{26} + \frac{22}{26}) \cdot \frac{17}{6} = \frac{39}{26} \cdot \frac{17}{6} = \frac{3}{2} \cdot \frac{17}{6} = \frac{1 \cdot 17}{2 \cdot 2} = \frac{17}{4} = 4\frac{1}{4}\)
Ответ: 17/4