已知x/y=4/3,求3x-2y/2x+5y的值
1.已知:x-2y=3,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除4x 的值
已知x-2y=2011,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]÷4x的值.
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
已知2x-y/x+3y=2,求代数式4x-2y/x+3y减4x+12y/2x-y的值
已知3x-2y/x+y=5/3求x;y的值
已知4x-2y=0,求x-y/3x+2y的值
已知3x-4y/2x+y=1/2 求x/y的值
已知x/y=3/4,求2x-y/x+y的值.
已知x^3+xy^2+x+x^2y+y^3+y=0,求5x-6y/3x+4y的值.
已知x=1/3,y=-1/2,求代数式x-(x+y)+(x+2y)-(x+3y)+(x+4y)-(x+5y)+...-(
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的值