Question
Sam folded 51 paper swans in three days. Each day after the first day, he folded 7 less paper swans than the day before. How many paper swans did he fold on the first day?
3 m

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Sam folded 51 paper swans in three days. Each day after the first day, he folded 7 less paper swans than the day before. How many paper swans did he fold on the first day?