[tex]\sf - \frac{5}{8} + \frac{5}{5} \\ \\\sf - \frac{5}{8} + 1 \\ \\\sf - \frac{5}{8} + \frac{8}{8} \\ \\\sf - \frac{5 + 8}{8} \\ \\\sf \color{blue}{ \frac{3}{8} }[/tex]
