Answer:
Amelia scored 19 points
Explanations:
Let the number of points that Amelia had be x
Millicent's points = 31
Millicent had 7 less than 2 times as many points as Amelia
This can be interpreted mathematically as:
2x - 7 = 31
Solve for x to know the number of points that Amelia
2x = 31 + 7
2x = 38
Divide both sides by 2
2x / 2 = 38/2
x = 19
Amelia scored 19 points