Question
Ken 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 Vincent but won 6 beads from his friend David. At the end of the second round, he lost 5 beads to David but won 6 beads from Vincent. In the end, Ken had 26 beads. How many beads did Ken have at first before the start of the game?
4 m

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Ken 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 Vincent but won 6 beads from his friend David. At the end of the second round, he lost 5 beads to David but won 6 beads from Vincent. In the end, Ken had 26 beads. How many beads did Ken have at first before the start of the game?