(2+x)/3>(2x-1)/5
    4(1+x)/3-1<=(5+x)/2 x-5<=3/2(3x-2)
    2(x+2)>=4/3(2x+3)
    -2-(8-x)/6
    2^2x-2大于1
    -abs(23-x)<-25
    0＜1-x/1+x＜1
    0＜1+x/1-x＜1
    1+x/1-x＞1
    (2x-1)/3-(5x+1)/2<=1 5x-2<3(x+2)
    (m+1)/3>=m-(m-1)/2;(m-3)/2+3
    a+3(a-6)<-2 1+2a>a-1
    3x-1
    m-8<=2(m+2) m/2+4<1
    2(y+3)-1>=1 y+2<2(y+3)
    2(m+3)>10 3m+1>7m-3
    3>2x+5 3x
    3>2x+5.3x
    1/4(c-2)<=1/5(2c+1)
    x^3+3*x^2+2*x-1≥0

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