解3/8X=3Y+12 5/8X=6y

填空题 x+y/4=x-y/6=3x+12y+5/8 x= y= 【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2= 12y(x-y)^2-8(x-y)^3=? 已知x.x+y.y-6x-8y+25=0,求3x.x+5y的值 3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y怎么解 解联立方程组 x/x+y=5/8 x/x+y+6=2/3 {x+y=1 ,xy=-6{x(2x-3)=0,y=x²-1{(3x+4y-3)(3x+4y+3)=0,3x+2y=5{(x-y+2)(x+y)=0,x²+y²=8{(x+y)((x+y-1)=0,(x-y)(x-y-1)=0 5X+8Y=3Y+6X 8x-8y-3x-3y=-12,6x+6y-8x+4y=16 解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3 解方程组8/(x+y) +(x-y)/2=3,6/(x+y)-(x-y)/4=1 解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12 8（x-y)=3（x+y)-12 6（x+y)=4（2x-y)+16 8（x-y)=3（x+y)-12 6（x+y)=4（2x-y)+16 3(2X+Y)+(2(2x-Y)=6 (8X+4y)-(10X-5Y)=2 {6x+5y=8,3x=2y-5x=y= 6x-2y=5 8x-3y=-5 求x,y [2(x-y)^5-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2