Ответ:

  1. \(1-\frac{16}{23}=\frac{23}{23}-\frac{16}{23}=\frac{7}{23}\).
  2. \(5-\frac{7}{16}=4\frac{16}{16}-\frac{7}{16}=4\frac{9}{16}\).
  3. \(6-1\frac{3}{5}=4\frac{2}{5}\).
  4. \(8-7\frac{12}{25}=\frac{25}{25}-\frac{12}{25}=\frac{13}{25}\).