x^2-28x+90=0
    (16+x)/(36+x)=9/19
    x+100+100+0.2x-(x+0.3x)=70
    (2*10^-7)*(100-x^2)/4=(2*10^-5)*(x^2-4)/54
    8.5*1000000*700*50+（x-35）*188/x*206000*1130.9+(x-115)*188/x*206000*1130.9+(x-150)*188/x*206000*(x-150)*180=(162-x)*206000*188/x*（162-x）*180+（523-x）*206000*188/x*22*180
    X*0.1-210=X-125685.45
    X*0.1-210=X-128700
    X*0.1-210=X-128883
    X*0.1-210=X-128910
    X*0.1-210=X-126257.05
    tan(0.0385*10)*tan(0.0385*x)=2.56
    tan(0.0385*15)*tan(0.0385*x)=2.56
    tan(0.0385*20)*tan(0.0385*x)=2.56
    tan(0.0385*x)*tan(0.0385*(40.75-x))=2.56
    x-2= 1/2.56
    0.2=（x-15.5）/x
    0.1=（x-15.5）/x
    0.4=（x-15.5）/x
    0.3=（x-15.5）/x
    x^3+7x^2+16x+11＝0

Home page << page482 page483 page484 page485 page486 ... ... page488 page489 page490 page491 page492 >> Last page 31235 pages in total