Question
Justin started with some beads at the beginning of a game. At the end of the first round of the game, he lost 4 beads to his friend Tom but won 6 beads from his friend Will. At the end of the second round, he lost 9 beads to Will but won 7 beads from Tom. In the end, Justin had 24 beads. How many beads did Justin have at first before the start of the game?
4 m

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Justin started with some beads at the beginning of a game. At the end of the first round of the game, he lost 4 beads to his friend Tom but won 6 beads from his friend Will. At the end of the second round, he lost 9 beads to Will but won 7 beads from Tom. In the end, Justin had 24 beads. How many beads did Justin have at first before the start of the game?