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普通に計算したらいいかと

(6/6²-1/7)×(-1/6)ⁿ⁻²
=(1/42)×(-1/6)ⁿ⁻²
=(-1/7)×(-1/6)×(-1/6)ⁿ⁻²
=(-1/7)×(-1/6)ⁿ⁻¹

m.t

ありがとうございます😭

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