\begin{tabular}{l} 11) Solve the problem. \\ \( \qquad \frac{7}{8}-\frac{6}{7}=\square \) \\ \hline\( \frac{1}{1} \)\end{tabular}

To solve \( \frac{7}{8} - \frac{6}{7} \), we need a common denominator. The least common multiple of 8 and 7 is 56. So, we convert the fractions: \(\frac{7}{8} = \frac{7 \times 7}{8 \times 7} = \frac{49}{56}\) and \(\frac{6}{7} = \frac{6 \times 8}{7 \times 8} = \frac{48}{56}.\) Now, we can subtract: \(\frac{49}{56} - \frac{48}{56} = \frac{49 - 48}{56} = \frac{1}{56}.\) So, the answer is \( \frac{1}{56} \).