｛X+5Y=6 ｛3X-6Y-4=0怎么接!要结果 和

二元一次方程(x+y)/2+(x-y)/3=6,4(x+y)-5(x-y)=2怎么算 3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y怎么解 {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 x^2+2y^2-2x+y-3=0与2x^2+5y^2-4x+y-6=0 的方程组怎么解 3x*5y+2x*6y=2.7*(3x+2x)怎么解 若2x-3y+4=0则x（x*x-1)+x(5-x*x)-6y+7 已知x.x+y.y-6x-8y+25=0,求3x.x+5y的值 y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,无 (x-y)的4次方/(y-x)的3次方+(x-y)0的次方*(y-x)+(-x-y)7次方/(x+y)6次方= 已知x^3+xy^2+x+x^2y+y^3+y=0,求5x-6y/3x+4y的值. 怎么解下列方程组?(1).X=Y+1 Y+X=5 (2)2X-3Y=4 1/2Y-X=1 (3)X+2=3Y 2X=3Y (4)3X+7=7 5X-2Y=8(5)2X+3Y=5 4X-Y=3 (6)3X-2Y=4 5X+3Y-13=0 (7)X+5Y=12 2X-5Y=-6 (8)X-3Y=-3 3X+Y=11 (要写过程) （x+y-5)*（x+y-5)+（x-y+3)=0 x*x-y*y 已知:3x-5y=0,求x/y,x-y/y,x-y/x （5x-6y)(x+y)=0(x不等于y),则y/x= {3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1 x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20 {(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20 4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6