Mathematics
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    848400<14400x-24x^2+x(600-x)/x^1/2
    14400-24x^2+x(600-x)/x^1/2>848411
    (5x−21)/(x−9)≥2
    (5x+39)/(x+7)≤3
    x+4/x+15≤0
    x+4/x+15≥0
    10+5x>6x-3-30
    y/17<45
    0.75 * x - 45 / 6 >0.75 * x - 337.5 / 5
    0.75x-45/6>0.75x-337.5/5
    0.75x-135/6>0.75x-337.5/5
    (1╱3)∧x>9∧1/5
    (1╱3)∧x>sqrt(9)
    (1╱3)∧x>sqrt5(9)
    sqrt(9-6x+x∧2)-abs(x-6)x<3
    6x-5≥4x+7
    -3x∧3+6x∧2-9x>0
    -9x∧2+12x-9>0
    (2x+1)(3x+2)>12
    x+2≥0

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