82. Решите неравенство: 1) |1 + 2|< 9;
3) |1 - 2x| = 7;
5) |3х + 5| = 20;
7) |7 - 4x| = 11.
9) |1 - 2x| < 4;
11) |2,5х + 1| < 1,5;
3) |1 - 2x| = 7;
5) |3х + 5| = 20;
7) |7 - 4x| = 11.
9) |1 - 2x| < 4;
11) |2,5х + 1| < 1,5;
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