Question
Ahmad started with some marbles at the beginning of a game. At the end of the first round of the game, he lost 5 marbles to his friend John but won 8 marbles from his friend Luke. At the end of the second round, he lost 3 marbles to Luke but won 9 marbles from John. In the end, Ahmad had 25 marbles. How many marbles did Ahmad have at first before the start of the game?
4 m

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Ahmad started with some marbles at the beginning of a game. At the end of the first round of the game, he lost 5 marbles to his friend John but won 8 marbles from his friend Luke. At the end of the second round, he lost 3 marbles to Luke but won 9 marbles from John. In the end, Ahmad had 25 marbles. How many marbles did Ahmad have at first before the start of the game?