2(7-y)+3y=15
    x(80％x-20)+20+68=x
    2x+54/x^2=0
    0.7x-20000=0.6x-8000
    arctanx+arctan0.1x=π/6
    arctanx+arctan0.1x=30
    arctanx+arctan0.1x=30
    arctanx+arctan061x=30
    arctanx+arctan0.1x=π/6
    36x^2-24x=0
    -2(x+1)^(1/3)/3(x+1)=0
    -2(x+1)^(1/3)/3(x+1)
    （5.3x-5)/7=x-8
    3/2t-3-t=2t-12
    x^2+1.0161x+0.5162＝0
    20x+x×x=400
    x/20＝20/x＋20
    3/x*x=1.5x
    23X^2+200X-9600=0
    x/19.3+（1200-x）/8.92=104

Home page << page2643 page2644 page2645 page2646 page2647 ... ... page2649 page2650 page2651 page2652 page2653 >> Last page 31237 pages in total