x<3, (–∞,3), (-3,3), (-1,1), (0,3), x≥–7, (-7,7), [–7,∞), (7,-7), (0,7), −1<x≤5−1<x≤5, (1,-5), (-5,1), (–1,5], (1,5), x<0x<0, (–∞,+∞), (–∞,0), (–∞,1), (0,-∞), 2≤x≤6, [2,6], (–∞,6), (6,-2), (-2,6), x≥1, (-∞,1), (-1,∞), (∞,1), [1,∞), –10<x<0, (10,0), (–10,0), (0,10), (-∞,0), x>1/2​, (1/2,∞), (2/1,∞), (-∞,0,5), (1/2,-∞), ∣x∣<4, (4,-4), (–4,4), (-4,0), (0,-4), x=0, (–∞,0)∪(0,∞), (∞,0)∪(0,-∞), (–∞,+∞)∪(0,∞), (-∞,+∞).

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