1 (n 5)(n 6)/30=2(n 5)/5

请输入您的数学问题…… 1 (n-5)*(n-6)/30=2*(n-5)/5

问题

1 (n - 5) * (n - 6) /30 = 2 * (n - 5) /5

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1 (n 5)*(n 6)/30=2*(n 5)/5