Question 228444
Combine like terms in the numerator and denominator.

{{{(9y)/(21y-42)}}}


Factor the denominator.  The common factor is 21:
{{{(9y)/(21(y-2)) }}}


Divide out the factor of 3.  Divide 3 into 21, which leaves a factor of 7 in the denominator:

{{{(3y)/(7(y-2)) }}}


Dr. Robert J. Rapalje, Retired
Seminole State College of Florida
Altamonte Springs Campus