x+4/2≥-2x+1/3
    (-2x+2)^2-4x(-x+2)＞0
    2x^2-4x+2＞1
    (x-1)^2＞0.5
    (1977.51+852.57*x+225.005*x^2+11.5*x^3)/(2057.45+522.7585*x+14.32*x^2+23*x^3/18)>1.2
    2x+3≥-1
    2(x+7)<7x+34
    12-x>4x-13
    11x-16<10-2x<5x+31
    5-5x>9x-23
    7-4x>-13
    2x-7<7x+28
    3（x+2)≥2（2x-1)
    10-3（x+6)≤1
    240+0.35x>0.05x
    240+0.35x<>0.05x
    ex－1/x＞0
    （3-3a）÷7≥1
    5x>10
    m^2-3m-3＞0

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