Г) \( 9\frac{10}{13} - 7\frac{12}{13} = 8\frac{13+10}{13} - 7\frac{12}{13} = 8\frac{23}{13} - 7\frac{12}{13} = (8-7) + (\frac{23}{13} - \frac{12}{13}) = 1 + \frac{11}{13} = 1\frac{11}{13} \)