16.937+88.83x>23+65x
    (1+x)/(1-x)>0
    3/x+3>x-4/x
    4x-3<=3x-2
    3x+2>2(x-1)
    2x-4
    -4≤lnx＜-1
    17*(1.18^N)＜6N
    ((x/9)-7)＞0
    ((x/7)-5)＞0
    x-2>2
    (0.1)^(x-1)>4.75
    (x/7)-8＞0
    -4082750+3000000+X-450000-X*10%/4≥300000
    -1<9a+13/5<=8
    1/1+x^2<=x<=x+1
    150a+120÷50×(3000-75a)≤6350
    3K*(K+2)>4
    x1+x2 ≤ 300 2x1+ x2≤400 x2≤250
    ln(a^2-4)<2-(a^2-4)^(1/2)

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