Ответ:
Ж)
$$4\frac{13}{13} - 1\frac{7}{26} = 4+1 - 1\frac{7}{26} = 5 - 1\frac{7}{26} = 4 + (1 - \frac{7}{26}) = 4 + (\frac{26}{26} - \frac{7}{26}) = 4 + \frac{19}{26} = 4\frac{19}{26}$$
Ж)
$$4\frac{13}{13} - 1\frac{7}{26} = 4+1 - 1\frac{7}{26} = 5 - 1\frac{7}{26} = 4 + (1 - \frac{7}{26}) = 4 + (\frac{26}{26} - \frac{7}{26}) = 4 + \frac{19}{26} = 4\frac{19}{26}$$