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≡ Sifat Logaritma Yang Dipakai:
⇔ ⁿ ㏒ a - ⁿ ㏒ ₓ = ⁿ ㏒ (ᵃ/ₓ)
⇔ ᵃ ㏒ x . ˣ ㏒ a = 1
⇔ nᵃ ㏒ bˣ = ˣ/ₐ . ⁿ ㏒ b
⇔ ᵃ ㏒ aⁿ = n
≡ Penyelesaian:
⇒
⇒
⇒
∴ 30,25