Let GCF(a, b) be the abbreviation for the greatest common factor of a and b, and let LCM(c, d) be the abbreviation for the least common multiple of c and d. What is GCF(LCM(28, 14), LCM(7, 14))?
GCF( LCM(28, 14), LCM(7, 14) )
= GCF( 28, 14 )
= 14
