Question

log1/2(7x-21)>log1/2 6x

Answer 1

$log_{ frac{1}{2}} (7x-21) textgreater log_{ frac{1}{2}}(6x)$
x∈(3,+∞)
$7x-21 textless 6x$
$7x-6x textless 21$
$x textless 21$, x∈(3,+∞)
Ответ: (3,21)