Respuesta :
I'd say 1 for this one.....because they do not have anything in common
19x7= 133 and 5x3=15. the factors of 15 are 1,3,5,15. so its one of those
if the question is "What is the greatest common factor of (19x)7 and (3x)5?" then the common factor would be 1x.
if the question is "What is the greatest common factor of (19x)7 and (3x)5?" then the common factor would be 1x.