1+75%x=5

x-1/3x+5=75％x如何解? x.x-5x+1=0,那么x.x+1/x.x 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) x(x-2)-2x(x+1)-3x(x-5) 其中x=负½ (x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3) x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x x-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4（x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1 f(x,-x)=x^2+2x,fx(x,-x)=5x+1,则fy(x,-x)= x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? 提取公因式:已知x*x-5x+1=0 求x*x*x-4x*x-4x-1 已知3x*x-x=1,求6x*x*x+7x*x-5x+2000 x+1=5x,x= 写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4 (x+7)(x+5)-(x+1)(x+5)=42 5x/x(1+x)=6/1+x x+x+1=(10x+x+1)×5 5/x²+x-1/x²-x=0 2x(x-1)-x(2x-5)=15