1) \(\frac{7}{12} + \frac{3}{12} = \frac{10}{12} = \frac{5}{6}\)
2) \(\frac{32}{39} - \frac{6}{39} = \frac{26}{39} = \frac{2}{3}\)
3) \(4\frac{17}{45} + 3\frac{13}{45} = 7\frac{30}{45} = 7\frac{2}{3}\)
4) \(9\frac{59}{63} - 5\frac{24}{63} = 4\frac{35}{63} = 4\frac{5}{9}\)