Transfer one-fifth of the art team to the expressive art team, and the two groups will have exactly the same number of people. The original number of people in the art group and calligraphy group

If one-fifth of the art group is transferred to the calligraphy group, it will be equal, which means that the art group is five-fifths and the calligraphy group is three-fifths, 5/5-1/5=4/ 5,3/5+1/5=4/5. This is equal. However, the question does not give a specific number, so there are countless answers: n 5/5 people for the art group, n 3/5 people for the calligraphy group.