Answer:
8!
Step-by-step explanation:
I'm sure you're still really smart, you just don't understand it :)
Those two bars mean the absolute value of whatever's inside of them. Absolute value is always positive, so if you had 34 inside of the bars, it would still be positive 34.
Now that we know what those bars mean, the expression is really this:
1 + 7
I'm sure you can solve that :)
