Question

Solve for x : log₁₀ (x - 10) = 1

Answer 1

log₁₀  ( x - 10 ) = 1
⇒ log₁₀ ( x - 10 ) = log₁₀10
⇒ x - 10 = 10
⇒ x = 10 + 10
⇒ x = 20.