16*2x>12*2x
    x－4>7
    4x+1>2x+1
    X>5
    4-4m<0
    4+4m<0
     2x/(200000×1000)≥800/10^9
    2x/(200000×1000)＞800/10
    (2a∧2-6a+1)-(a∧2-4a－1)＞0
    a∧2-2a+2＞0
    ln(3x+4)≥0
    92x>x^2+3x+1600
    4x^2-4x-8≥0
    a∧2＞1
    4x²+2x+1＞0
    2x^2-5x-3<0
    (a-9)(a+1)≥0
    (a-9)(a+1)<0
    2x>0
    (2m-2)/(3m+3)<0

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