diketahui himpunan a dan b berikut

Diketahui himpunan A dan B =
A = {6, 9, 12, 15, 18}
B = {4, 6, 8, 10, 12, 14}
Hasil dari A U B = {4, 6, 8, 9, 10, 12, 14, 15, 18}

A = {6,9,12,15,18}
B = {4,6,8,10,12}
Jawaban = {4,6,8,9,19,12,15}