1) (–∞; 7) ∪ (6; +∞) = (–∞; +∞)
2) (–∞; –4) ∪ (–5; 2) = (–∞; 2)
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1) (–∞; 7) ∪ (6; +∞) = (–∞; +∞)
2) (–∞; –4) ∪ (–5; 2) = (–∞; 2)