YOU SAID:

im going to the bathroom to wash my hands

INTO JAPANESE

私は手を洗いにトイレに行きます

BACK INTO ENGLISH

I go to the bathroom to wash my hands

INTO JAPANESE

手を洗いにトイレに行く

BACK INTO ENGLISH

Go to the bathroom to wash your hands

INTO JAPANESE

トイレに行って手を洗う

BACK INTO ENGLISH

Go to the bathroom and wash your hands

INTO JAPANESE

トイレに行って手を洗う