SubArea: Arithmetic sequencesLevel: BProject ID: 9000072701Accepted: 1Clonable: 0Easy: 1The following numbers form an arithmetic sequence. Find \(x\). \[ 1\, ,\ x\, ,\ 3 \]\(x = 2\)\(x = -2\)\(x = 2.5\)\(x = 1.5\)
