x*1.2>100+x*1.5
    x>23300+10x/4
    8^x-64>0
    56+44+14+3y>140
    9 + m < 21
    8 + n > 4
    170000+0.8X≥22000+0.4X
    75+20.4X/500+34X>0.3
    70+20.4X÷500+34X>0.3
    (n+1)/(2*n)<1011/2020
    （x+1)/2-(5+x)/6>3-(x-1)/3
    -8(2x^1/2lnx+x^1/2)lnx-(-8x^1/2lnx)^1/2>0
    -2(1+x)^1/2+(-8x^1/2lnx)>=0
    4x+4+8x^1/2lnx<0
    -16x<36
    4x>-32
    x(60-x)>900
    x^3-2x^2-5x+6<0
    (x+3)(x+2)(x-5)>=0
    (x+1)(-2x+3)(3x+1)>0

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