[tex] \frac{1 + 2}{6} = \frac{3}{6} = \frac{1}{2} [/tex]
[tex] \frac{1}{3 + 1} = \frac{1}{4} [/tex]
[tex] \frac{1 + 3}{10} = \frac{4}{10} = \frac{2}{5} [/tex]
[tex] \frac{1 - 1}{3} = \frac{0}{3} = 0[/tex]
[tex] \frac{8}{5 - 1} = \frac{8}{4} = 2[/tex]
[tex] \frac{13}{7 - 1} = \frac{13}{6} [/tex]
