Mathematics
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    10000/x + 10000/(x+28.75) < 147
    4.459x-3.217>=50
    (2x-1)/2<1 5x+2>=3x
    5a^2-29a+40≦0
    5a^2-27a+39≦0
    2/3(x)-(3x-1)/2<=1/3
    sinx+sin(9x)>2
    sinx+sin9x>2
    3x+2小于-7x+12
    x ^ 2 >100>x ^ 3
    x ^ 3 <100 x ^ 2 >100
    x^3<100 x^2>100
    x < -690 x > -690
    (x/115+13-7)^2>0
    (x/12+14)>0
    3t^2-80√3t+600≤0
    0<114514n<114514
    1<=5n<60
    0<5n<60
    5n<60

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