Basic JavaScript: Subtract One Number from Another with JavaScript

JavaScript
1

Hi guys.My name is Trong Anh and I’m not sure what’s going on to my javascript code.
This one:https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-javascript/subtract-one-number-from-another-with-javascript
When I make a variable difference like this and it has an error
difference = 12;
var difference = 45-12;
It doesn’t get the difference equal 12.

2

45 - 12 is 33, not 12

3

Hello @tronganh you have to replace the value 0 with any number so the difference is 12 .

you’re replacing 0 with 12 and answer is 33 but answer should be 12.

4

var difference = 45 - 0;
var difference = 45 - 17; // edited code, but not working…!

// running tests
The variable difference should be equal to 12.
You should only subtract one number from 45.
// tests completed

I don’t understand this question in this lesson.

5

45 - 17 isn’t 12, that would be why your test is failing