gcf of 15 and 38, gcf of 15 and 48, gcf of 15 and 36, gcf of 15 and 39, gcf of 15 and 68, gcf of 15 and 8, gcf of 15 and 28, gcf of 15 and 80, gcf of 15 and 89, gcf of 15 and 81, gcf of 15 and 30, gcf of 15 and 35, gcf of 15 and 34, gcf of 15 and 40, gcf of 15 and 22
gcf of 15 and 38. There are any references about gcf of 15 and 38 in here. you can look below.