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A billing specialist is reconciling a client's account balance, where xx represents the hourly service rate. The adjustments are modeled by the expression 39x+(92x)+(39x){}39x + (-92x) + (-39x). To simplify this expression, the specialist groups the first term, 39x{}39x, and the third term, 39x{}-39x, because they are additive opposites. The sum of these two opposite terms is ____.

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Updated 2026-06-01

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