From 11:00PM PDT on Friday, July 1 until 5:00AM PDT on Saturday, July 2, the Shmoop engineering elves will be making tweaks and improvements to the site. That means Shmoop will be unavailable for use during that time. Thanks for your patience!
We can translate this question directly into symbols. Even though this one is simple enough that we can probably intuit the answer without writing it out, it's good practice for when you're faced with a problem that's more complex. It's also good practice for writing things in general. We've noticed that your handwriting has gotten a little sloppy as of late.
Our unknown number is x and we're averaging two numbers, so: