Question
Ryan started with some balls at the beginning of a game. At the end of the first round of the game, he lost 4 balls to his friend Reggie but won 9 balls from his friend Bryan. At the end of the second round, he lost 3 balls to Bryan but won 9 balls from Reggie. In the end, Ryan had 24 balls. How many balls did Ryan have at first before the start of the game?
4 m

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Ryan started with some balls at the beginning of a game. At the end of the first round of the game, he lost 4 balls to his friend Reggie but won 9 balls from his friend Bryan. At the end of the second round, he lost 3 balls to Bryan but won 9 balls from Reggie. In the end, Ryan had 24 balls. How many balls did Ryan have at first before the start of the game?