10x-7＜3x+21
    2（x-5）-1>6
    2x>5
    570*x+50980.5*x/1298+570*x*0.1%+570*x*0.1%+1987.909+(628.254*x+16078.55*x/1298+2186.6999)*0.00968/0.99032<3000000
    570*x+50980.5*x/1298+570*x*0.1%+570*x*0.1%+1987.909+(628.254*x+16078.55*x/1298+2186.6999)*1.1*0.88%<3000000
    570*x+50980.5*x/1298+570*x*0.1%+570*x*0.1%+1987.909+(628.254*x+16078.55*x/1298+2186.6999)*0.88%<3000000
    3x+4>-2
     (4200/30)x＋1800/(30—(x—30))＜3000/x
    (21+d)(21+4d)<(21+11d)
    0.9≤（1-x)^100
    -50-（100+X）*1%+X≥10
    9+4a≥0
    x^2-1160x+81683≤0
    1.1×990.432×10^6≤18.4×990×x×(580-x/2)
    6/a＜-2
    40-2n>0 40-2n<0
    10-4(x-4)<=2(x-1) 2(3x-1)-3(4x+5)>x-4(x-7) (2+x)/3<=(2x-1)/2 x+(1-x)/2>1/3
    y*y+2y+1
    -6+2x>0 -3x<=9
    2558.5<14.3*800x(x/2-30)-(1021.28-1.47x)*840

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