SubArea: Absolute value equations and inequalitiesLevel: CProject ID: 1003163004Accepted: 1Clonable: 0Easy: 0Find the sum of all the roots of the given equation. \[ \Bigl| |x-4|-9\Bigr|=0 \]\( 8 \)\( 18 \)\( 6 \)\( 4 \)
