3-2x>0
    x+1/x=3
    -2=7(-8-2x)
    5x^2+4x-12
    3(2^(3x+1))<8
    3(2^3x+1)<8
    √X+3<2
    8X^2-4X≤1/4
    2-absx-1<0
    -1≤absx+1<2
    abs2x-1>-5
    2absx-1≤3
    absx>2
    absx<1
    3≤absx-2<9
    1/absx>0
    -2x^(2)-2x+3<0
    2*x>3
    2*x>2
    2*x>1

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