What's the difference between "ПЕРВЫЕ" , "ПЕРВЫ" and "ПЕРВЫ". I

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1

What’s the difference between “ПЕРВЫЕ” , “ПЕРВЫ” and “ПЕРВЫ”. I saw in translator that 3 ways means the same: first. Thanks for your help

2

No, your tranlator is wrong.
We have ПЕРВЫЙ(masc), ПЕРВАЯ(fem), ПЕРВОЕ(neutre), ПЕРВЫЕ(plural).
But we don’t have the form “первы”.
Good luck!
Examples:
первый день
первая встреча
первое письмо
первые уроки