During the excursion, 48 people got on one bus and 6 fewer on the other.

During the excursion, 48 people got on one bus and 6 fewer on the other. How many people have to move from the first bus to the second so that there are equal numbers of passengers?

To answer the question of the problem, you need to find out the number of people who got on the second bus, but since we already know the difference in the number of passengers of 2 buses, we immediately answer the question of the problem:
6: 2 = 3 – 3 people should change seats and there will be 45 people in each.