Answer:
a + 6
the variable (the letter if thats what you call it) should always go first cause you would never know if that letter is greater than or less than or equal to 6.
Also, since we don't know the number "a", we can't add it to 6.
so, therefore, your answer is "a + 6"
Hope this helps.
Please tell me if its right or not.....
Explanation: