Answer:
Step-by-step explanation:
You have to be assured that x really is even. In this case (and the question has a flaw in it) , you assume that x is even. Normally you would multiply x by 2 to get 2x. Now you know it is even, but it is the number not required of you.
So we will assume it is even.
x + x + 2 + x + 4 Combine like terms
x + x + x = 3x
2 + 4 = 6
Answer: 3x + 6
