YOU SAID:

It didn't work did it?

INTO JAPANESE

それはそれをやった動作しませんでしたか。

BACK INTO ENGLISH

It did or didn't work.

INTO JAPANESE

それか動作しませんでした。

BACK INTO ENGLISH

It did not work either.

INTO JAPANESE

それはどちらもうまくいかなかった。

BACK INTO ENGLISH

Neither of them went wrong.

INTO JAPANESE

それらのどちらもが間違っていた。

BACK INTO ENGLISH

Neither of them was wrong.

INTO JAPANESE

どちらも間違っていた。

BACK INTO ENGLISH

Both were wrong.

INTO JAPANESE

どちらも間違っていた。

BACK INTO ENGLISH

Both were wrong.