(260-x)*(0.75*x+45)=9000
    (260-x)(0.75x+45)=9000
    x^2-120x-2160 = 0
    x^2-120x-2160=0
    X^(-1)=4
    x*4=1.87
    x*400=1.87
    25x^2-x+9=0
    P*15%=P*(1-5%)-205
    205*P*15%=P*(1-5%)-205
    205P*0.15=0.95P-205
    205*0.15P=0.95P-205
    205*9*25%=P*0.95-205
    30.75P=0.95P-205
    X+3=5
    [（1000*p)+25000]*25%=[1000*p*（1-5%）]-[(1000*50)+25000]
    P*25%=P*(1-5%)-50+25000/1000
    1000*p*25%=1000*p*（1-5%）-1000*50+25000
    （1000*p+25000）*25%=1000*p*（1-5%）-1000*50+25000
    X+1870/2400X=48500

Home page << page1562 page1563 page1564 page1565 page1566 ... ... page1568 page1569 page1570 page1571 page1572 >> Last page 31249 pages in total