Question

ДАЮ 17 БАЛОВ!!!!!!! ПЖПЖПЖПЖП

Answer 1

$(\frac{5}{4})^{3}:(-\frac{125}{64}) *(\frac{5}{4})^{0}*\frac{4}{5} =(\frac{5}{4})^{3}:(-\frac{5}{4})^{3}*1*\frac{4}{5}=-1*1*\frac{4}{5}=\boxed{-\frac{4}{5}}$