Because it’s the only other thing about that system at all. OP wasn’t teaching, just showing what that system does. If you looked for a source that explains it you’d be told
Comment on A fake Facebook event disguised as a math problem has been one of its top posts for 6 months
pulsewidth@lemmy.world 1 week ago[deleted]
Seasoned_Greetings@lemm.ee 1 week ago
prole@lemmy.blahaj.zone 1 week ago
Because it’s just a mnemonic to remember what the order of operations is, not like… What the order of operations is, which you should know if you know the mnemonic.