bobari6723 bobari6723 24-11-2022 Mathematics contestada this is a relation on the set {a,b,c,d,e}. add one ordered pair to make it an equivalence relation. { (a,a), (b,b), (d,d), (e,e), (a,b), (b,c), (a,c), (b,a), (c,b), (c,a), (d,e), (e,d),