It looks like homework so you need to show some effort. You seem to know that you'll need to do a star-delta (or delta-star) transformation so where are you stuck? What do your course notes or your web research tell you? Please [edit] to show your work.
– TransistorApr 22 '21 at 19:52
Can you post your solution as an answer and then accept it so the system knows your question is solved. Otherwise it keeps popping up hoping for an answer. Thanks.
– TransistorApr 22 '21 at 21:46