3x-5
    3x-6<=9
    1-(2x+5)/3>x-2
    5x+2>=3(x-1)
    x/3<(x+1)/4
    2(x+2)<=x+3
    2(x+2)<=x+3
    (x+5)/2-1<(3x+2)/3
    5x+2>3(x-1)
    (X-1)/3>=X/2-1
    1/2*x-1<=7-3/2*x
    1/2*x-1<=7-3/2*x
    abs(x^(1/x))<1
    （1-x）^2>1
    -4082750+3000000+W-W*10%/4-450000大于等于300000
    x-6≤2-x x-1>3x÷2
    X^3-4X+3>0
    x3-4x+3>0
    150b+90(200-b)＜22000
    150b+90(200-b)>21000

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