2^b>1
    2x+3＜－1
    (2x-1)/3-(5x-1)/2≤1
    2x-6<3x (x+2)/5-(x-1)/4≥0
    5x+7≥3(x-1) 2-(2x+5)/3>x-3
    x-(3/2)(2x-1)≤4 (1+3x)>2x-1
    5x-4≤2+7x x-(x-1)/3<(1+x)/2
    (x+1)/3-(2x-1)/4≥(x-3)/6
    -4082750+3000000+X-450000-X*0.03>=300000
    4/3x+3>1-2/3x
    2x-7<3(x-1）
    3-（x+2)/4<(2x-5)/6
    5(x+2)<28-2x
    -2*x^2+3*x-2<0
    9/8x*x>=2sqrt(2)x
    (X-1)/X>0.55
    (X-5)/X>0.55
    (X-10)/X>0.55
    (8215+x)/(14025+x)＞0.75
    (8215+x)/(14025+x)≥0.9

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