已知(2x+3y-18)+|4x+5y+32|=0,则4x-3y等于?

已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) 已知4x=5y,那么(3x+y)/(x-2y)= 已知x,y>0 2x+y+3=xy 求5x+4y最小值 已知(2x+3y-18)+|4x+5y+32|=0,则4x-3y等于? 已知2y-x=-3,求[4y(2x-y)-2x(2x-y)]/(2x-y 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*x+4x+y*y-2y+5=0,则x*x+y*y=? 已知:3x-5y=0,求x/y,x-y/y,x-y/x 已知7x+5y/2y-x=3/2,且x≠0,求X/x-4y 已知(x-y)÷4=(2x+y)=5,且2x-3y=18,求3x-5y的值.是“（x-y)÷4=(2x+y)÷5” 因式分解(x-2y)(x-3y)+(x-4y)(x-5y)+（x-3y)(x-5y)+(x-2y)(x-4y) 已知x-y=1,求[(x+2y)^2+(2x+y)(x-4y)-3(x+y)(x-y)]除以y的值大神们帮帮忙 已知x-y=1,求[(x+2y)²+(2x+y)(x-4y)-3(x+y)(x-y)]÷y的值 (3x-2y)(4x-5y)-11(x+y)(x-y)+5xy,已知X=3又1/2,y=2又1/3 已知x^3+xy^2+x+x^2y+y^3+y=0,求5x-6y/3x+4y的值. 已知x*x-2xy-3y*y=0且x不等于0 y不等于0,那么5x-4y/5x+4y= 已知x=5y-2分之3y+4,用x的代数式表示y