Respuesta :

Hello, the answer is D. 2a
charliethebest2002

Answer:

  • [tex]\boxed{\sf{2a}}[/tex]

Step-by-step explanation:

In order to solve this problem, you need to add their similar elements together.

First, add similar to elements.

[tex]\sf{a+a=\boxed{\sf{2a}}[/tex]

  • So, the correct answer is D. 2a.

I hope this helps you! Let me know if my answer is wrong or not.