Answer: \(a = 5\), \(d = -4\)
First term \(a = t_1 = 5\).
\(d = t_2 - t_1 = 1 - 5 = -4\) (also \(-3 - 1 = -4\)).
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Doubtly AI
· 25 Oct 2026
AI-verified · Oct 2026
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