You can put this solution on YOUR website!
Solving an equation for x means getting x by itself on one side of the equation. In your equation the x in in the argument of a log function. Somehow we need to be able to extract the x from the argument of log. The simplest, most common way to do this is to rewrite the equation in exponential form. In general
can be rewritten as
. Using this on your equation,
, we get:
(since log (without a base) is a base 10 log).
We can now solve this. Start by simplifying the left side:
Now we can multiply both sides by 1/9 (or divide by 9):