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2018-10-12 15:37:13 -04:00
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title: Compound Assignment With Augmented Subtraction
---
## Compound Assignment With Augmented Subtraction
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Computers read from left to right. So, using the '-=' operator means that the variable is subtracted by the number on the right, then the variable is assigned to the difference. Like so:
var b = 10;
b -= 4; // Now, 'b' is 6