Question

Which expression shows the sum 9 + 21 rewritten as a product of the GCF and a sum?

9(1 + 21)
3(3 + 7)
3(3 + 21)
9(1 + 3)

Answer 1

3(3 + 7)

Explanation:

9 + 21

HCF is 3

3(3 + 7)

Answer 2

Answer: 3(3+7)

Explanation:

3(3+7)

3.3+3.7

9+21