56X+104X-4XX=640
    x²+2x＝3
    x²+3x＝3
    6r-r^2=8
    （√6+√2-x）²+（√6+√2）²=√2x²
    √x*x+（√6+√2-x）*（√6+√2-x）=2√3+2-√2x
    -x+3=-x2-2x+3
    -2x^2+480x-25600=1400
    Kigviij
    ｛（2√2）+2｝x∧2+｛-2-（2√2）｝x+√2=0
    1/3+（1/x+1/60)*24=1
    2/(x+10)=1.2/(x-10)
    (X*2*0.8)/2=49
    7(x-1)+3(x+1)=6x
    7/(x*x+x)+3/(x*x-x)=6(x*x-1)
    （10m*m-6m+1）：（-3m*m+m）=-5：2
    (2.9-x)*6000/x=400
    2.9-x*6000/x=400
    （15+x）/（35+x）=3/5
    （15+x）/5=（35+x）/5

Home page << page429 page430 page431 page432 page433 ... ... page435 page436 page437 page438 page439 >> Last page 31237 pages in total