5385.435+8.778x^2≤1644.06+165x+1.54*0.8*0.7*【430+（6662.25+1114.65x+46.5x^2）/（14.1+x）】
    5385.435+8.778x^2-1644.06-165x-1.54*0.8*0.7*【430+（6662.25+1114.65x+46.5x^2）/（14.1+x）】 ≤0
    4185.435+14.32x+1300≤2.2*(747.3+75x)+0.8624*(430+(528.75+46.5x)/(14.1+x))*(15.6+x)
    5385.435+8.778*x^2-1644.06-165*x-1.54*0.8*0.7*【430+（6662.25+1114.65*x+46.5*x^2）/（14.1+x）】 ≤0
    5385.435+8.778*x^2-1644.06-165*x-1.54*0.8*0.7*（430+（6662.25+1114.65*x+46.5*x^2）/（14.1+x））≤0
    1286+202.5+50+250+23.09*4.4+2295.339+14.32x+480*2+170*2≤0.5*4.4*(53*14.1+75x)+1.54*0.8*0.7*(430+5*(7.5*14.1+9.3x/14.1+x))*(15.6+x)
    (x－2.5)╱x＞0.55
    3x-3x^2<1
    3x-3x^2>0
    2x-x^2>0
    2x-x^2<1
    3625.12-562.07×x ≤ (105.75+9.3×x)/(14.1+x)×(15.6+x)
    27445.38-562.07×x ≤(105.75+9.3×x)/(14.1+x)×(15.6+x)
    5−x≥−3+x
    5x+10≤2x+1
    x−5≥−2x+13
    x+5≥2x−1
    2x+5≥4x−1
    2x≥4
    5≤x+3

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