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---
id: cf1111c1c11feddfaeb4bdef
title: Subtract One Number from Another with JavaScript
challengeType: 1
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videoUrl: ''
localeTitle: Resta un número de otro con JavaScript
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---
## Description
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< section id = "description" > También podemos restar un número de otro. JavaScript usa el símbolo < code > -< / code > para restar. < p > < strong > Ejemplo< / strong > < / p > < blockquote > myVar = 12 - 6; // asignado 6 < / blockquote > < / section >
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## Instructions
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< section id = "instructions" > Cambia el < code > 0< / code > por lo que la diferencia es < code > 12< / code > . < / section >
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## Tests
< section id = 'tests' >
```yml
tests:
- text: Haz la < code > difference</ code > variable igual a 12.
testString: 'assert(difference === 12, "Make the variable < code > difference< / code > equal 12.");'
- text: Sólo restar un número de 45.
testString: 'assert(/var\s*difference\s*=\s*45\s*-\s*[0-9]*;(?!\s*[a-zA-Z0-9]+)/.test(code),"Only subtract one number from 45.");'
```
< / section >
## Challenge Seed
< section id = 'challengeSeed' >
< div id = 'js-seed' >
```js
var difference = 45 - 0;
```
< / div >
### After Test
< div id = 'js-teardown' >
```js
console.info('after the test');
```
< / div >
< / section >
## Solution
< section id = 'solution' >
```js
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// solution required
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```
< / section >