Mathematics
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    100x+50(100-x)<=7650
    1+x>3
    x+3(100-x)>=250
    2x+(100-x)>=120
    3x-1/2+1>2x
    4<x+10>=5x
    5>-5X
    2-x≥1/6
    3*2^(x-3)*(15-x)≥(3*2^(x-3)-1)*14
    3*2^(x-3)*(14-x)<(3*2^(x-3)-1)*13
    3*2^(x-3)*(9-x)<(3*2^(x-3)-1)*8
    3*2^(x-3)*(10-x)≥(3*2^(x-3)-1)*9
    x^2+x-2≥0
    x^2+x-2>0
    x^2+59x-2400<0
    2(5-x)<7-x
    4x-2-9x+3<6
    3(x+1)<2x+6
    472500-472500*(49370-x)/(50370-x)-x>0
    x*x-2x-15<0

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