SubArea: Logarithmic equations and inequalitiesLevel: BProject ID: 1003159001Source Problem: 2010010105Accepted: 1Clonable: 1Easy: 1Solve. \[ 5^{-x}=7 \]\( x=-\log_57 \)\( x=-\log_75 \)\( x=\log_57 \)The equation has no solution.Fixed Answer: Last Fixed
