4x-(25-x)>=85
    0.5(2m-1)>0.5(1+m)
    a<1 a<0
    2x<=2
    (2+4x/(x+6))x≤(7-4x/(x＋6))×6
    210大于等于16m+12(15-m)
    198小于等于16m+12(15-m)
    2/3-11/3a小于等于1
    15大于3-2a
    14小于等于3-2a
    85大于等于5y-3(20-y)
    75小于等于5y-3(20-y)
    75小于等于5y-3(20-y)
    20-10k-k²/(10-k)>0
    4<=abs(-9/4m+9)<6
    4<=abs(-4/9m+9)<6
    e^x-3/2x²＞1/e－3/2
    e^x-3x²/2＞1/e－3/2
    m^2-8*m+15>0
    ( ( 62 ^ ( 1 / 2 ) ) * ( 66 ^ ( 1 / 2 ) ) * ( 462 ^ ( 1 / 2 ) ) ) / (40 * K) >1000000

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