100-x<=2x
    35x+15(50-x)>=1530+1150
    223>3850*x-(52.5/(35x+0.42))
    223>3850*x-(105/(35x+0.42))
    34n－3n＾2≥0
    3000≥20x＋30（x－5）
    223>385*x-(52.5/(3.5x+0.42))
    223>385*x-(10.5/(3.5x+0.42))
    0.16×1.04^（n-1）＞（0.05×n+1.05）×0.18
    0.16×1.04^（n-1）＞（0.05n+1.05）×0.18
    0.0075x^2-2.25x+50<0
    (500-x)*(1+0.005x)*1.5>750
    (7-x)(3-x)(4-x*x)<=100
    {5x - 2>3(x+1) {(1/2)x - 1 <= 7-(3/2)x
    5x - 2>3(x+1) (1/2)x - 1 <= 7-(3/2)x
    1/x-2>0
    5x - 2>3(x+1)
    （1+2x）/4 + 1/5 >(1-3x)/10
    -7x^2＋22x-15≥0
    x*1/2（20-x）>=42

Home page << page923 page924 page925 page926 page927 ... ... page938page page939page page940page page941page page942page >> Last page 1275 pages in total