Answer:
10,20
Explanation:
What numbers do 2 and 10 both go into
2 and 10 both go into 10
10/2 = 5
10/10 =1
So 1 common denominator is 10 (This is the least common denominator)
2 and 10 with both go into 20
20/2 =10
20/10 =2
A second common denominator is 20