J.R. S. answered 10/21/20
Ph.D. University Professor with 10+ years Tutoring Experience
3(NH4)2S(aq) + 2Fe(NO3)3(aq) ==> 6NH4NO3(aq) + Fe2S3(s) .. balanced molecular equation
From this, you should be able to write the complete ionic equation and then cancel spectator ions and write the net ionic equation.