David L. answered • 23d

Ph.D. Chemist tutoring math and science

Let x be the number of points they scored in the first two games. The problem says they scored in the third game x-6 points (six less than the first two games). The problem says the total for the three games was 63, so

x + x + (x-6) = 63

Simplify to 3x-6 = 63

Add six to both sides to get 3x = 69

Divide both sides by 3 to get x=23

Therefore, they scored 23, 23 and 17 points, respectively, in the three games