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  1. 11-12-2013, 06:28 PM Top | #1
    1995
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  3. 11-12-2013, 06:33 PM Top | #2
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    |2x-3|≤ 1 ⇨ -1 ≤ 2x-3 ≤ 1 ⇨ 2 ≤ 2x ≤ 4 ⇨ 1 ≤ x ≤ 2


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