Step-by-step explanation:
The three-fifths compromise was a compromise between the north and south. The south wanted slaves to be counted with the population. If this were to occur, the south would gain more power within Congress as the House of Representatives distributes representatives based on each state's population. The north did not want slaves to be counted as then they would lose power within the House. To avoid gridlock, the north and south compromised by declaring slaves would only be considered 3/5's of a person instead of a whole person. This way the north didn't dominate nor lose all of its power in the House and the south could still gain a good portion of power within the government.