[tex]Hello! \\
a) \frac{7}{2} + \frac{5}{3} + \frac{7}{4} = \frac{42+20+21}{12} = \frac{83}{12} \\
b) \frac{17}{6} + \frac{5}{4} + \frac{11}{8} = \frac{68+30+33}{24} = \frac{131}{24} \\
c) \frac{7}{2} + \frac{11}{4} + \frac{9}{5} = \frac{70+55+36}{20} = \frac{161}{20} \\
See- you- later![/tex]
