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Resume of Xinxiang Youth League Committee Li Yang
X people donated 7 volumes and (40-6-8- 15-2-x=9-x) people donated 8 volumes.

4x 6+5x 8+6x 15+7x+8(9-x)+50x 2 = 320

326-x=320

x=6

9 x = 9 6 = 3

A: Six people donated seven volumes and three people donated eight volumes.

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