x＋1.2x－56＋x－68＝500
    e^(-20x)=8
    1/e^20x=8
    x-x*0.23=10
    e^(-20x)=8
    0.23x+x=10
    x.2|3
    x*x*x-7*x+4=0
    a1+a2=5 a3+a4=7 a1+a3=7 a2+a4=5
    640（x+1）^2=1000
    640（x+1）^2=1000
    8-(3x)²/2=16+x²
    (58-x)/ln((90-x)/32)=45
    x（1-20%）+x=x100%
    0.8x+x=1x
    0.8x+x=x
    X^2-9 x-18=0
    X^2-9 x+18=0
    1/x（x+1）+1/（x+1）（x+2）+1/（x+2）（x+3）=1/x+3
    X^2-9x-9=0

Home page << page1323 page1324 page1325 page1326 page1327 ... ... page1329 page1330 page1331 page1332 page1333 >> Last page 31237 pages in total