**Answer:**

This means each team has exactly 15 players.

**Step-by-step explanation:**

<em>Six teams are out on the field playing soccer. </em>

Number of Teams = 6

<em>The teams all have the same number of players.</em>

Let number of players = x

Total number of players = 6x

<em>The head coach asks for 2 players from each team to come help him move some equipment.</em>

This meas we subtract 2 from every team. Since there are 6 teams, total number of players to be subtracted = 12

Number of players left = 6x - 12

<em>NOW there are 78 players on the field.</em>

This means;

78 = 6x - 12

6x = 12 + 78 = 90

x = 90 / 6 = 15

This means each team has exactly 15 players.