Mathematics
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    (6-3x)/2≥1-(2x-1)/3
    (0.51×33680x+0.51×28000)÷(16420x+13600)<(0.49×33680+0.49+28000)÷(17440x+14400)
    (17176.8x+14280)÷(16240x+13600)>(16503.2x+13720)÷(17440x+14400)
    x∧2+5x+6<0
    12>(1.5+1.5+2+1.5+2+1.5+1.5+2)/(1+X%)
    12>(2+2+1.5+2+1.5+1.5+1.5+2)/(1+X%)
    12>(2+2+1.5+2+2+2+1.5+2+1.5+2)/(1+X%)
    -5x<25
    -(1/2)x>(3/2)x-1
    150×a+100×(12-a)≥1500
    -2x>-1
    5000×a+3000×(12-a)<54000
    70x+90×(2x+5)≤5450
    7x-3>6x-16
    30x+50(6-x)+(10-x)40+80(2+x)<900
    x^3-2*x^2-x+1>0
    0.9%<(135.6-X)/(125.6-X)<1%
    x+2≥1
    10x+4-3<3x-18
    1/(n+1)^4<10^-12

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