David's bowling score is 7 less than 2 times Aaron's score. The sum of their scores is 188. Find the score of each student. Use the variable a for Aaron's score. In terms of Aaron's score, David's score is:
The equation in terms of Aaron's score is:

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?