# An algebra problem by Ilham Saiful Fauzi

Algebra Level pending

Let $$\left \{a_{n}\right \}$$ be an arithmetic progression of real numbers such that the sum of its first $$p$$ terms is $$q$$ and sum of its first $$q$$ terms is $$p$$. Then find sum of the first $$p+q$$ terms of $$\left \{a_{n}\right \}$$.

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