Which one is the right form?

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hi,

Which one is the right form?
“speak together” or “speak with each other”?
Is there any general rule for using “together” and “each other” with verbs?

Then, we had better to say “Which one is the right form” or “Which one is the correct form”

Thanks in advance,
Mohammad

2

I’d think both are OK, and “Which is right/correct.” sufficient.

3

I would definitely choose “speak with each other.” That will be construed as a conversation between you and someone else. We can speak together by merely talking at the same time, perhaps addressing an audience together in a speech.

“Right” and “correct” are fine.