Mathematics
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    x/2≤-1, -x+7>4
    x/2+(x+1)/3>0
    x/2+(x+1)>0
    2+(x-1)×1.4>1.6x
    3(x-2)+8>2x
    abs(x-2/x)>x-2/x
    x2-110x+3016≥0
    12-4x+x^2>=0
    30>100-(1.99/x)*100
    2(x-2)≤3(x-1)
    (x+4)/3-(3x-1)/2>1
    2x-3/3>3x+1/6-1
    2(x-1)<3x-1 ((4x)/3)-((3x-1)/4)<2
    1+2x<-20
    -(x-1)/2<(x/4)+2
    -(x-1)/2
    
-24<1+2x
    40x+2*44≤406
    50*80+40*(x-80)≤8000
    8x+9>-x

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