[tex]8 \frac{5}{10} -7 \frac{5}{12} \\ \\ 8 \frac{1}{2} -7 \frac{5}{12} \\ \\ \frac{8 \times 2 + 1}{2} - 7 \frac{5}{12} \\ \\ \frac{16+1}{2} - 7 \frac{5}{12} \\ \\ \frac{17}{2} - 7\frac{5}{12} \\ \\ \frac{17}{2} - \frac{84+5}{12} \\ \\ \frac{17}{2} - \frac{89}{12} \\ \\ LCD = 12 \\ \\ \frac{17 \times 6}{2 \times 6} - \frac{89}{12} \\ \\ \frac{102}{12} - \frac{89}{12} \\ \\ \frac{102-89}{12} \\ \\ \frac{13}{12} \\ \\ 1\frac{1}{12} \\ \\ Answer: \fbox {1 1/12} \ or \ \fbox {1.0833}[/tex]
