যদি Log₁₀ 5 + log₁₀ (5x + 1) = log₁₀ (x + 5) + 1 হয় তাহলে x এর মান -

Log₁₀ 5 + log₁₀ (5x + 1) = log₁₀ (x + 5) + 1
⇒ log₁₀ 5 + log₁₀ (5x + 1) = log₁₀ (x + 5) + log₁₀ 10
⇒ log₁₀ [5(5x + 1)] = log₁₀ [10(x + 5)]
⇒ 5(5x + 1) = 10(x + 5)
⇒ 5x + 1 = 2x + 10
⇒ 3x = 9
⇒ x = 3