Posted by Sandra on Friday, July 10, 2009 at 6:01pm.
Build each rational expression into an equivalent rational
expression with the indicated denominator.
7yt= ?
____ _____
3x 18xyt

Algebra  Reiny, Friday, July 10, 2009 at 6:16pm
Ask yourself, "what was 3x multiplied by to get 18xyt ?"
 looks like 6yt
so your numerator has to multiplied by that as well, so ...