x-3(x-1)<5
    -4082750+x-450000-x×10%÷4≥3000000
    -4082750+3000000+x-450000-x×10%÷4≥3000000
    4/5小于等于(1-m)/2
    -450+x-x×8%÷4-690≥500
     6x-2大于等于3x-4 (2x+1)/3-0.5(1-x)小于1
    1-x>4 3x-4小于3 (3x-2)/3大于等于1 4x-5小于3x+2 2x-4大于3(x-2) 4x大于(x-7)/2 6x-2大于等于3x-4 (2x+1)/3-0.5(1-x)小于1
    1-x>4 3x-4小于3 (3x-2)/3大于等于1 4x-5小于3x+2 2x-4大于3(x-2) 4x大于(x-7)
     2000a+104000 < 2650a+91000
     2000a+104000 <> 2650a+91000
    1.03^x>1.03x
    -55+A-A×4%/4-5≥10
    -55+A-A×4%/4-5≥10
    3/4大于等于ln-a/2
    3/4大于等于ln-a/2
    sin（x）+xcos（x）<0
    sin（x）+xcos（x）<0
    sinx+xcosx<0
    (6x-1)/(2x+7)+22/(x+5)>3
    sinx+xcosx<0

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