Преобразование смешанных чисел в неправильные дроби:
- \(13\frac{3}{4} = \frac{13 \cdot 4 + 3}{4} = \frac{52 + 3}{4} = \frac{55}{4}\)
- \(6\frac{4}{15} = \frac{6 \cdot 15 + 4}{15} = \frac{90 + 4}{15} = \frac{94}{15}\)
- \(9\frac{11}{19} = \frac{9 \cdot 19 + 11}{19} = \frac{171 + 11}{19} = \frac{182}{19}\)
- \(10\frac{53}{61} = \frac{10 \cdot 61 + 53}{61} = \frac{610 + 53}{61} = \frac{663}{61}\)
Ответ: \(\frac{55}{4}\), \(\frac{94}{15}\), \(\frac{182}{19}\), \(\frac{663}{61}\)