What is the greatest common factor of 21 and 63?
February 20th, 2023
##21##
Both ##21## and ##63 = 3 * 21## are divisible by ##21## and ##21## has no greater factor, so this must be the .
##21##
Both ##21## and ##63 = 3 * 21## are divisible by ##21## and ##21## has no greater factor, so this must be the .