Whenever you see a variable (letter) without a number in front of it, the "number" would be 1!
Example:
a = 1a
So simply do basic math! For now, ignore the letters!
2a + a + 2a + a
becomes
2 + 1 + 2 + 1
Once you have your answer, simply add an a to the end!
Your answer will have NO exponents because you're adding! If you were multiplying or dividing the variables, then exponents would be an issue.
Hope this helped! :)
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DISCLAIMER: I am not a professional tutor or have any professional background in your subject. Please do not copy my work down, as that will only make things harder for you in the long run. Take the time to really understand this, and it'll make future problems easier. I am human, and may make mistakes, despite my best efforts. Again, I possess no professional background in your subject, so anything you do with my help will be your responsibility. Thank you for reading this, and have a wonderful day/night!
