freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-an.../basic-javascript/subtract-one-number-from-an...

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---
id: cf1111c1c11feddfaeb4bdef
title: Subtract One Number from Another with JavaScript
challengeType: 1
videoUrl: 'https://scrimba.com/c/cP3yQtk'
forumTopicId: 18314
dashedName: subtract-one-number-from-another-with-javascript
---
# --description--
We can also subtract one number from another.
JavaScript uses the `-` symbol for subtraction.
**Example**
```js
const myVar = 12 - 6;
```
`myVar` would have the value `6`.
# --instructions--
Change the `0` so the difference is `12`.
# --hints--
The variable `difference` should be equal to 12.
```js
assert(difference === 12);
```
You should only subtract one number from 45.
```js
assert(/difference=45-33;?/.test(__helpers.removeWhiteSpace(code)));
```
# --seed--
## --after-user-code--
```js
(function(z){return 'difference = '+z;})(difference);
```
## --seed-contents--
```js
const difference = 45 - 0;
```
# --solutions--
```js
const difference = 45 - 33;
```