Question

Заранее спасибо большое

Answer 1

$9\frac{2}{3}:9\frac{1}{6}=\frac{29}{3}:\frac{55}{6}=\frac{29}{3}\cdot\frac{6}{55}=\frac{29\cdot2}{55}=\frac{58}{55}=1\frac{3}{55}$

$(8\frac{1}{12})^{-4}=(\frac{97}{12})^{-4}=(\frac{12}{97})^{4}=\frac{12^4}{97^4}$