Mathematics
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    x+3≥2x-1 3x-5≥1
    x+5>3 x+6>4x-3
    2x-1>x+1 x+8>4x-1
    a-√a^2-3≤3/4
    2a^2-3+2a√a^2-3≥9/4
    x+5<4x-1
    2x-1≥x+2
    80x+100*(50-x)≤4300
    tanx/sinx>0
    x+3>4
    x-3>4
    x+4>4
    x/3-4>3
    1-1/2x<3-x
    1000+300*(1+x)<200*(1+x)/x
    {x/3+2>x 2x+2≤3(x-1)
    x/3+2>x 2x+2≤3(x-1)
    2x+2≤3(x-1)
    2x+2≤3(x-3)
    x/3+2>x

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