Question 104905
{{{(9^(2x))*(27^(x-3))=1/9}}}

{{{(3^(4x))*(3^(3x-9))=(3^(-2))}}}
{{{(3^(7x-9))=(3^(-2))}}}

you can forget 3 because it has same 

so
{{{7x-9=-2}}}
{{{7x=7}}}
{{{x=1}}}

cheers