Mathematics
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    π/1.5*0.14*(52*(2/sin18-5)+60x)>238.386
    10-3(x+6)≤1
    x^2+x-6>0
    -x+x^2-6>0
    2lnx-x^2≤-1
    -x+x^2-6≥0
    x-x^2+6<0
    x^2+x-6≥0
    x^2+x+6≥0
    3(2/5x+2)>6-2(1-x)
    x/280-(x+100)/240≥-0.6
    x÷280-(x+100)/240≥0.6
    275x>250乘200
    25x>250×200
    (x+1)/3
    
5-3X≥0
    x/0.8*4>100
    (1+x)/2<=1-(2-4x)/5 (2x-1)/2-(2x+5)/3>=(6x-7)/4-1 12-4(3x-1)>=2(2x-16) x-(3x-8)/2+1>=2(10-x)/7
    (1+x)/2<=1-(2-4x)/5
    -x<5x+6

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