1 + 2 + 4 + 2 = 9 (Goals scored in the first four games)
3 + 1 + 0 + 2 = 6 (Goals conceded in the first four games)
12 – 9 = 3 (Goals scored in the last game)
7 – 6 = 1 (Goals conceded in the last game)
The red team won the last game. The score was 3-1.