kx-1<0
    n^2-n<40
    4(2x+1)-12>3(3+5x)
    (1036034.16/9.81)/A≤60*10^6
    −5x−2≤−7
    −2(x−3)+3>9
    2x-5>3
    3x+2−(x+5)≤1
    2x-4/3≥x+3/4
    x-5/3>1
    3(x−3)<−(x−3)
    7x−2≤5
    -x^2+3≥0
    -x≤2
    -x^2+3≥1
    -3x+3≤0
    4t^4-9t^2-t+4<0
    30000x+x/9>497415
    4x^2+10x-6>8
    -900x+50000<=39200 -100x+10000>=8500

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