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An HVAC control systems technician is programming an automated climate control valve. The adjustment value xx (in millimeters) must satisfy two structural safe-operating constraints: 5(3x1)10{}5(3x-1) \leq 10 and 4(x+3)<8{}4(x+3) < 8. After solving the first constraint, the technician gets x1x \leq 1. After solving the second constraint, the technician gets x<1x < -1. To find the overlapping safe zone where both constraints are met, the technician must find the intersection of these two sets. In interval notation, this overlapping safe operating zone is represented as ____.

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Updated 2026-06-02

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