Mathematics
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    3(2/5+2)≥6-2(1-x)
    3(x-4)>7x-2
    -3/2<(4x-5)/6
    (4x-5)/6-x≤1
    sin(x)>0.5
    (1-3x)/2≤-(8x-1)/5
    3(1-2x)>1-4(1+x)
    3x^2+4x-15<0
    x/3-(x-2)/2<1
    2(6-x)>3(x-1)
    1/3x-1>4-(4/3)x
    x-1≤3(x+1)
    3+1/3-x>0
    (x+1)/2>=(3x+1)/5
    (651.4+25.4n^2)/(977.1+152.4n)+(2.1+n)*837.3+2082.64+323.8-1.2{[(50+3n)*(203n+7n^2)/(304.6+21.8n)]+(2.7+n)*930+(6+n)*241+(12+n)*29+(14+n)*10}>=0
    20x+5(60 -x)大于等于1000
    -671.86632-669.622*n-40.93868*n*n+1.128*n*n*n≥0
    (1-x)/0.2-1<=(x+7)/0.3-11
    (5x-3)/5-(5x-3)/4>3/20
    x-(2x+3)/5<(x-1)/4

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