sin x <0.5
    -x*x*x≤60*1000*x/35/π+192*1000000/35/π≤x*x*x
    60*1000*x/35/π+192*1000000/35/π-x*x*x≤0
    (x/5)+2/5
    (3/2)x+2<(3/4)x+5
    2x-6>x-3
    2x-1>x-3
    4（y-3）+1≥-13-3（2y+1）
    -2x+1<5
    0.948*10^5*(40.29^1.77/X^4.77)*210.5*0.393<0.2*30
    5x+4大于3x-1
    （2x+3）/5＜1
    2x+3/5＜1
    lg（x）>26
    200a+150（50-a）≤7500
    45x+30(6-x)>=240
    400x+280(6-x)<=2300
    x+1＞0
    3^x＜3^3x－1
    40m+25(6-m)>=195

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