Basic JavaScript - Assignment with a Returned Value

JavaScript
1

Hello, so my question is why is it that the num argument is in parentheses when used in a return statement? Previous lessons taught me to use it as is (no parantheses). Is it because of + 3? if so why in parantheses? Please help me understand. Thanks!!!
Your code so far

// Setup
let processed = 0;

function processArg(num) {
  return (num + 3) / 5;
}

// Only change code below this line

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Challenge: Basic JavaScript - Assignment with a Returned Value

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2

This case is not related to return itself. Without parentheses - num + 3 / 5 - it would have different result, as the division would be calculated before num value is added.

3

So when we do calculation more than one, the first calculation has to be in parentheses?

4

It doesn’t need to be. Unless not adding parenthesis would cause wrong result. This might sound a bit vague, but the main factor is the operator precedence and what would be the intended result. With num added to 3 first and then divided by 5 - written as (num + 3) / 5; or 3 divided by 5 and then added to num - written as num + 3 / 5