已知|x-1|=5,(y+2)^2=9,求3x-2y的值

已知1/x+1/y=5,求(2x-3y+2y)/(x+2xy+y)的值 已知3x-4y/2x+y=1/2 求x/y的值 已知3x-2y/x+y=5/3求x；y的值 已知|2x-3y|+|3x-y-1|=0,求x,y的值. 已知2x-y/x+2y=3,求2(2x-y)/x+2y-9(x+2y)/2x-y+3的值. 已知X.x+y.y-4x+2y+5=0,求4X.X-12X Y+9Y.y的值 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) (1)已知x+y=6,x²-y²=5,求x-y的值（2）若x+y=3,x²+y² 已知x+y=-1,xy=-2,求代数式-5（x+y)+(x-y)+x(xy+y)的值 已知4x=9y求(1)x+y/y (2)y-x/2x 1.已知:x-2y=3,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除4x 的值 已知x-2y=2016,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除以8x的值