(x^2+x-3)<0
    0.025(x^2+x-3)<0
    0.025(x^2+x-3)^5<0
    ((0.2+0.3x)/0.2)>((0.1x-0.3)/0.04)-0.5
    ((0.2+0.3x)/0.2)>((0.1x-0.3)/0.04)-(1/2)
    3(x-1)<5x+2 ((3/2)x)-7<((-1/2)x)+1
    x-3(x-2)>4 (2x-1)/5<(x+1)/2
    3-5x>x-2(2x-1) (3x-2)/4>2.5-(x/2)
    x-3(x-1)<7 1-((2-5x)/3)
    x-((3x-2)/4)>((2(1+x))/3)-1
    ((2a-1)/2)-((2a+5)/3)<((6a-7)/4)-1
    -3(x+1)-(x-3)<8 ((2x+1)/3)-((1-x)/2)<1
    (0.2+0.3x)/0.2>((0.1x-0.3)/0.04)-(1/2)
    1.5/(1+0.6x)≤150
    1.5/1.3^x≤150
    2+x>10
    451568+51x>1023369
    1-a>a>2a-4
    5x+2≤3x-6
    5x－4<2x+5

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