[tex] \frac{9}{8} + \frac{1}{36} + \frac{7}{24} [/tex]
[tex] = \frac{81}{72} + \frac{2}{72} + \frac{21}{72} [/tex]
[tex] = \frac{81 + 2 + 21}{72} [/tex]
[tex] = \frac{104}{72} [/tex]
[tex] = \frac{52}{36} [/tex]
[tex] = \frac{26}{18} [/tex]
[tex] = \frac{13}{9} [/tex]
