（724+x）/（696+x）>0.97
    (x+5)/3<2x
    2（x+1）>3x-1
    x+2>3
    4（x+1）≤7x+13
    (2x-1)<6x/(x*x+1)
    (2x-1)*(x*x+1)＜6x
    ((16+x)/220+1)/(x/220+1)<1.01
    ((16+x)/220+1)/(x/220+1) < 1.04
    ((16+x)/220+1)/(x/220+1)>1.04
    ((16+x)/220+1)/(x/220+1)>1.01
    ((16+x)/220+1 )/(x/220+1) > 1.01
    ((16 x)/220+1 )/(x/220+1) > 1.01
    ((16 x)/220 1 )/(x/220 1) > 1.04
    ((16+x）/220 +1 )/(x/220+1) > 1.04
    6y＋5(2y＋60)≤2100
    x/3>(x+1)/4
    2x-4<3(x-1)
    -12x∧2+4x+1＞0
    -12x∧2+4x+2＞0

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