[tex] \frac{1}{2}*(2 \frac{1}{6} + \frac{7}{8}) \\ \\ \frac{1}{2}*( \frac{13}{6} + \frac{7}{8}) \\ \\ \frac{1}{2}*( \frac{13*4}{6*4} + \frac{7*3}{8*3}) \\ \\ \frac{1}{2}*( \frac{52}{24} + \frac{21}{24}) \\ \\ \frac{1}{2}*( \frac{73}{24} ) \\ \\ \frac{1*73}{2*24} \\ \\ \frac{73}{48} \\ \\ 1 \frac{25}{48} [/tex]
