Respuesta :

ywu1879

Answer:

7a+2a=9a

Step-by-step explanation:

You distribute the a to each of the numbers in the parenthesis. Which means that you multiply. You should be left with a 7a+2a. Then since 7+2=9, your answer is 9a. So answer 1 is correct because they do these exact steps.

kaylafoster

Answer:

A

Step-by-step explanation:

You do 7a+2a=9a because you would have to give an a to each number with using distributive property

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