Mathematics
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    (x)(70-x)>600
    (2.19+x)(67.81-x)>600
    (2.19+x)(67.81-x)<60
    -3x^(2)+6x+1≥0
    x^2-3x<0
    x^2-1<0
    3x+4≤x+10 2x+5-3<12x
    3x+4≤x+10
    2x+5-3>12x
    3x-4≤2(2x-1)
    3x-5
    
10-4(x-3)≥2(x-1)
    5(x-1)>2(x+2)
    5x-2>3(x+1)
    0.5x-1≤7-1.5x
    x
    
x>abs(x)
    x(x+1)<80.5
    x^(2)+4x-5<=0
    8-2x-x^(2)<0

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