6x-2y=5 8x-3y=-5 求x,y

已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) 6x-2y=5 8x-3y=-5 求x,y 已知:3x-5y=0,求x/y,x-y/y,x-y/x 已知x.x+y.y-6x-8y+25=0,求3x.x+5y的值 (x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5) 6x+5Y=31 2X+3Y=17求X求 Y y=x^3-5x^2+2x-8 求y^2求y撇 {(x+y)/2+(x-y)/3=1,(x+y)-5(x-y)=2.求x=?,y=? x+y=8 2x-y=1 求3x+5y 3X+2Y=5X+2 2(3X+2Y)=2X+8 求 X Y 已知x-2y=2016,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除以8x的值 已知x-2y=2012,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]/(8x)) x-2y=2008求{(3x+2y)(3x-2y)-(x+2y)(5x-2y)}/8x 已知x-2y=2010,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]÷8x的值 已知:x-2y=2009,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除以8x 的值 x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2 6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5 5X+Y=3 X+5Y=2 求x和y.5X+Y=3X+5Y=2求x和y.