Answer:
14 + 21 =
= (7 * 2) + (7 * 3)
= 7(2 + 3)
Explanation:
The Greatest Common Factor (GCF) of 14 and 21 is the greatest number that both 14 and 21 are divisible by.
14 = 2 * 7
21 = 3 * 7
The GCF of 14 and 21 is 7.
14 + 21 =
= (7 * 2) + (7 * 3)
= 7(2 + 3)