Linux free -m Total used and free memory values don t add up closed

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On a linux system, while using "free", following are the values:

         total      used      free    shared  buff/cache   available
Mem:  26755612    873224    389320    286944    25493068    25311948
Swap:        0         0         0

The total, used and free values don't add up. I'm expecting total = used + free.

Question: What am I missing here?

Apr 26 in Linux Administration by Edureka
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