Mathematics
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    500x-5-0.5x-5-500*7.96>0
    ex-1/ex-2x+1>1
    1800A+150(70-A)≥30000
    -3/2b>0
    (3/4)-(1/(x-3))>(x/(x+4))
     lg(2x-1) ≤1
    0 <= x <= 5
    x+25.72x^(5÷12)>=357.38
    x+23.48x^(5÷12)>=357.38
    65×20+4x≤2000
    2*(1/3)^(2n-1)/(2n-1)<0.0001
    22x≤170
    x-3(x-2)≥4
    2*(1/3)^(2n-1)/(2n-1)<0.0001
    2(x-3)<8
    610-X-885*8%/4≥10
    9000+250X>50000+300X
    (3600-20*72)/(72+m)+20 ≤ 40
    2/1X>3/1X 4X-3>=1
    2/1X>3/1X 4X-3>=1

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