--- id: cf1111c1c11feddfaeb4bdef title: Subtract One Number from Another with JavaScript challengeType: 1 --- ## Description <section id='description'> We can also subtract one number from another. JavaScript uses the <code>-</code> symbol for subtraction. <strong>Example</strong> <blockquote>myVar = 12 - 6; // assigned 6</blockquote> </section> ## Instructions <section id='instructions'> Change the <code>0</code> so the difference is <code>12</code>. </section> ## Tests <section id='tests'> ```yml tests: - text: Make the variable <code>difference</code> equal 12. testString: 'assert(difference === 12, "Make the variable <code>difference</code> equal 12.");' - text: Only subtract one number from 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 var difference = 45 - 33; ``` </section>