-2p-4+3p>10
    2/3+v-7/9>=0
    1/7+d<1+1/7
    22.5
    22.5
    -y-4+2y>11
    1-a>0 2a+4>0 a-3<0 -2a>0
    ( 1 - abs ( x ) ) / ( 1 - abs ( x - 0.5 ) ) >= 1/4
    (1-abs(x))/(1-abs(x-0.5))>=1
    [2^n+2 -(-1)^n -3]/6>=16^2021
    -2<（a-（a-4）^1/2）<2
    -2<（a+（a-4）^1/2）<2
    x^2<4
     2^b>1
    2x+3＜－1
    (2x-1)/3-(5x-1)/2≤1
    2x-6<3x (x+2)/5-(x-1)/4≥0
    5x+7≥3(x-1) 2-(2x+5)/3>x-3
    x-(3/2)(2x-1)≤4 (1+3x)>2x-1
    5x-4≤2+7x x-(x-1)/3<(1+x)/2

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