Answer :
greatest common factor is the biggest number common to both
least common multipule is the smallest number that both will multily to get
find the factors
18=2 times 3 times 3
15=3 times 5
gcf=3
lcm=2 times 3 times 3 times 5=90
least common multipule is the smallest number that both will multily to get
find the factors
18=2 times 3 times 3
15=3 times 5
gcf=3
lcm=2 times 3 times 3 times 5=90
