Mathematics
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    -2X^2-6X-5<0
    3X^2-7X>10
    3X^2-7>10
    3XX-7>10
    abs(2X-1)≥1
    abs(2X+3)<1
    abs(X+3)>abs(X-5)
    abs(X-2)≥3
    abs(X-2)<9
    abs(2X-1)≥3
    26700+x-10%x÷12×3≥50080
    abs(X+2)<3
    abs(X-2)≤12
    abs(X+3)>4
    4
    
4
    
abs(2X+1)>abs(5-X)
    (509.92+X)/(12812-X)=10%
    5(X-1)<-3(X-3)
    [(2X-5)÷4]-[(2X+5)÷3]≥[(6X-7)÷2]-1

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