What is 4x+4x equivalent

would be equivalent to

If you were to add 4 apples with 4 apples, you will get 8 apples. This is a very similar case. If you add 4 x's with 4 x's, you get 8 x's.

Let me know if you need any clarifications, thanks!

~ Padoru

8x

Step-by-step explanation:

Step 1:  Combine like terms

4x + 4x is same thing as 4 + 4 for addition

4x + 4x is 8x and 4 + 4 is 8

The only different between the two is that the one that has the x stays with the x and the one without the x stays without the x.

 8x