Question 319728
<pre><b>

{{{x/(x - 3) = 3/(x - 3)}}}

Since their denominators are equal, their numerators
must be equal also, meaning the x on top on the left would 
have to equal the 3 on top on the right. But x can't equal
3 because that would make the denominators be 3-3 or 0, and
we cannot have 0 denominators. 

Edwin</pre>