3x-1>26
    1+2m<=2
    (x-2)/3<0
    2(2-x)+1>=3
    1-m/2>0
    (5x+3)/(5x-2)<=0
    (5x+3)(5x-2)<=0
    60 * 5500 + 5000 * ( x - 60 ) ≥550000
    60*5500+5000*（x-60）≥55000
    x+((3-2x)/2)<1-((x+2)/6)
    100/240+x/240-x/280≥0.6
    2 X-7>3(X-1)
    10x+15（350-x）*80%≤4000
    55x+40（100-x）≤5000
    28x+52（30-x）≤980
    -4082750+3000000-450000+A-A*10%/4≥300000
    -4082750+3000000-450000+A-A*10%/4≥300000
    1＜-(3p-9/5)≤2
    1＜-3p-9/5≤2
    3(x+2)>2(x+3)

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