Question

 0.5^{х+7}* 0,5^{1-2х}=2

Answer 1

$0.5^{x+7}*0.5^{1-2x}=2$
$0.5^{x+7+1-2x}=0.5^{-1}$
$-x+8=-1$
$-x=-1-8$
$x=9$
ответ: 9