Basic JavaScript - Passing Values to Functions with Arguments

I completed this challenge using the same example from the video, and I understand it. I just found it a little tricky because the instructions didn’t include an example with the - or + in the console part. Also, where does the 3 and 16 come from?

function functionWithArgs(a, b) {
  console.log(a + b);

functionWithArgs(10, 5)

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Challenge: Basic JavaScript - Passing Values to Functions with Arguments

Link to the challenge:

If you look in the lower left corner there is a section called “Tests”. These are tests called behind the scenes on your function to make sure its working as expected. You will see one that calls functionWithArgs with the arguments 1 and 2, and one that calls with 7 and 9, which gives you your 3 and 16 when those numbers are added together and logged to the console in your function.

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