Question

Use the Distributive Property to write an equivalent expression for 21x+7

Answer 1

Answer: 7(3x+1)

Explanation:

there is a common factor of 7 in both 21 and 7. therefore you can take a 7 out of the equation to get 7(3x+1)

extra: 7 times 3x = 21x and 7 times 1 = 7. this is how you verify your answer is correct.