若2x+3y=2014,则代数式2(3x-2y)-(x-y)+(-x+9y)=
若代数式2x+2y=100,则代数式2(3x-2y)-(x-y)-3(x-2y)=( )
已知X-Y/X+Y=3,求代数式2(x-y)/X+Y-3X+Y/X+Y
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
若2x+3y=2004,则代数式2(3x-2y)-(x-y)+(-x+9y)=...
若2x+y=2012,则代数式2(3x-2y)-(x-y)+(-x+9y)=
已知x-5y=0(y≠0),则代数式2x-3y/3x+6y
若2x+3y=2010,则代数式2(3x-2y)-(x-y)+(-x+9y)=( )
若2x+3y=2010,则代数式2(3x-2y)-(x-y)+(-x+9y)=
若2x+3y=1003,则代数式2(3x-2y)-(x-y)+(-x+9y)=
若2x+3y=2013,则代数式2(3x-2y)-(x-y)+(-x+9y)= ?
若2x+3Y=2009,则代数式2(3x-2y)-(x-y)+(-x+9y)=?
已知x=3分之1,y=二分之一,求代数式x-(x+y)+(x+2y)-(x+3y)+...-(x+13y)的值