11x-10<8x-3
    4(2x-1/4)-5(9/5-3x)<8(x-3/8)
    4(2x-0.25)-5(1.8-3x)<8(x-0.375)
    11x-8<8x-3
    4（2x-1/4)-5(9/5-3x)<8(x-3/5)
    4*(a - 2)*(a + 1) - 1 > 0
    4*(a + 2)*(a + 1) - 1 > 0
    1-(x-1)＜0
    1+3x/2＜2（x+1/4）-1/3
    150x+180(5-x)＜830
    x^3-3x>-2
     2t+1/2t*(1-1/2t) <3
    2t+1/2t*(1-1/2t)＜3
    1/a+a-a^2＜3
    4-4^x≥0
    4*k*k+22>0.5*k+1.3*k*k+1.01466667
    3＜absx－1＜5
    x/280+6000>=(x+1000000)/(280-40)
    x/280+6000<=(x+1000000)/(280-40)
    x/280+6000<=(x+1000000)/280-40

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