x+3/5＜2x－5/3－12
    5(x-2)-9>7(x-11)+36
    5x<2(x-1)+8 ((x-2)/4)<((2x-3)/6)
    arctan0.2x+arctan0.05x<50
    x+3>-2x
    78468464654484>465456454xe3
    abs（2x-1）＜x+1
    0.5x-1>7-1.5x
    （x-1）/2+2>-x
    110÷x<100÷4
    25x>50000
    275x>50000
    75x>50000
    1－x≤2
    6x+30-2x-14>12
    5x-2<7
    2x大于-2
    x*x+x>2
    1/x+1>x
    0/x+1>x

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