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title: Compound Assignment With Augmented Addition
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# Compound Assignment With Augmented Addition


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## Hints

### Hint 1
Computers read from left to right. So, using the '+=' operator means that the variable is added with the right number, then the variable is assigned to the sum. Like so:
```js
var a = 9;
a += 10; // Now, 'a' is equal to 19
```