"Teriak yang keras, agar kami bisa mendengar kalian."

Translation: Scream loudly, so we can hear you.

[Winmar]

In another question with 'teriak' I was marked wrong for writing scream, with shout given as the correct answer. In this case shout is wrong, but scream is right!

[dwOxHTZv]

Why include "yang"?

[Ms.Fixer]

Do you remember "verb + dengan + adjective" turns into "verb + adverb"?

You need to convert "dengan" into "yang" only when it is an imperative sentence. This explanation is based on a reliable source, but unfortunately it is written in my native language Japanese... Most of people can't read it, but just in case here is the source.
https://www.arbeeindonesia.com/arbeebi/page-0-3/menengah/page-0-5/

Sample sentences:

"Andi belajar dengan rajin." (Word-to-word translation: Andi studies with diligent. = Andi studies diligently.)

==> "Belajar yang rajin!" (Study hard!)

[FZausHH]

i typed loud, and got a red x :/

[sprankton]

That's technically not grammatically correct, but they probably should accept it. That's how most native speakers that I know would say it.

[AnUnicorn]

That doesn't sound like a terrifying threat at all!