Posted by caleb on Tuesday, May 12, 2009 at 11:18pm.
Rational expressions in lowest terms
4y

2xy + 4y

math  drwls, Wednesday, May 13, 2009 at 12:27am
Divide numerator and denominator by 2y.
That leaves you with 2y/(x + 2), which is in lowest terms. You have cancelled out the largest common factor.