Mathematics
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    a-1<2a+4<=-2
    6<=a-1<2a+4
    3x加8减5(x减1)大于等于0
    abs(x+1)≤abs(x+3)
    abs(X+3)≤abs(X+1)
    cos(x/10)大于0
    cos(x/10)大于0
    (x-1)>1
    (x-6)(x+3)>0
    (x+1)/132<0.05
    (x+1)/132+1.5%<6.5%
    【(x+1)/132+1.5%】*(x+1)*2980-【(x/132+1.5%】*2980x>238
    (3*x-2)/3-(9-2*x)/3>(x+2)/2
    x²-4x-5>0
    x*x-2*x-8<0
    150x+100(10-10x)≤1250
    150x+100(10-x)≤1250
    150+100(10-x)≤1250
    (3x²+2x+1)/(x²+x+2)<=1
    (x+1)/(2-x)>=-2

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