4x^2 -x-9 =0
    （x+2）×（10-x）＝40
    x^2+5.8x-1=0
    27x-9x^2＋10＝28
    x^6+100.01x^4+x^2-100=0
    (x - 1)(x + 1)
    450/x-450/x+5=1
    1/3(x+7)=2/5-1/2(x-5)
    3x-3=3
    3(20-y)=6y-4(y-11)
    -3x-5=3
    -5-3x=-x
    50x-30x-951-(0.65x-0.25x-15)=0
    50x-30x-951-(0.65x-0.025x-15)=0
    50x-30x-951-(0.65x-0.024x-15)=0
    50x-30x-951-(14.6x)=0
    50x-30x-951-(-14.6x)=0
    50x-30x-951--14.6x=0
    x*235.0439+（1-x）*238.0508=238.0289
    X-6.5%X=498000

Home page << page961 page962 page963 page964 page965 ... ... page967 page968 page969 page970 page971 >> Last page 31249 pages in total