Question

log 1/3 (log2 (12 – x)) > –2

Answer 1

{12-X>0⇒X<12
{log(2)(12-x)>0⇒12-x>1⇒x<11
{log(2)(12-x)<9⇒12-x<512⇒x>-500
x∈(-500;11)