Question 879051
{{{-4+log(9,2x)=5}}}


Add +4 to both sides;
change to exponential form;


{{{9^9=2x}}}, .....
How would you prefer to find {{{9^9}}}?  This would be about a nine-digit number.
{{{highlight(x=(1/2)9^9)}}}


{{{highlight(x=193710244.5)}}}
(a software-program number calculator was used)