Question

$log_{5}x+ log_{5}31= log_{5}93- log_{5}4$

Answer 1

ОДЗ:   $x textgreater 0$

Решение:
$log_{5}x+ log_{5}31= log_{5}93- log_{5}4 \ \ log_{5}x= log_{5}93- log_{5}4 -log_{5}31 \ \ log_5x=log_5 frac{93}{4*31} \ \ log_5x=log_5{ frac{93}{124} } \ \ log_5x=log_50,75 \ x=0,75$

Ответ:  $0,75$