(y+2)÷4-(2y-3)÷6=1 求y的值

(y+2)÷4-(2y-3)÷6=1 求y的值 已知x-y=1,求[(x+2y)²+(2x+y)(x-4y)-3(x+y)(x-y)]÷y的值 已知xy=-2,x-y=3,求（x+y)（x-y)-y^2+（x-y)^2-（6x^2y-2xy^2)÷2y 2x-y=2,求[(x²+y²)-(x-y)²+2y(x-y)]÷4y 已知4y^2+4y+1+|x-1|=0 求[(x-2y)^2-(2x+y)(2x-y)+(3x-y)(x+y)]÷（2y）的值 已知x^2-8x+y^2-y+16又1/4=0,求[(x+y)(x-y)-(x+y)^2-2y(x-3y)]÷4y的值 已知：【（x²+y²）-（x-y)²+2y（x-y)】÷4y=,求4x/（4²-y²）-1/（2x+y)的值已知：【（x²+y²）-（x-y)²+2y（x-y)】÷4y=1，求4x/（4²-y²）-1/（2x+y)的值 1.已知2x+y=4,求这个整式[(x+y)^2-(x-y)^2-2y(x-1/2 y)]÷4y的值 已知2x+y=4,求代数式[(x+y)²-(x-y)²-2y(x-1/2y)]÷4y的值 已知2x+y=4,求代数式[(x+y)²-(x-y)²-2y(x-1/2y)]÷4y的值 （还没学因式分解） 4Y^3+3Y^2+4Y+1=0求Y 4（5—2y)+7(y+1)=3(4y-1)+17求y 4*（5—2y)+7(y+1)=3(4y-1)+17求y (3-y)÷2+y=(7y-6)÷8.求过程啊 4y²-4y/y²-2y+1÷(y+1/y-1-y-1/y+1)÷(3y+3) 已知2x-y=10,求式子[(x^2+y^2)-(x-y)^2+2y(x-y)]/4y (4xy-2y²)/4y是怎么变成=2y(2x-y)÷4y 已知、5x²-2xy+y²+4x=1=0求[(x+y)(x-y)-(x-y)²+2y(x-3y)]÷(-4y)的值 6y-(y+2分之y+2-y分之y)÷(y^3-4y-2y^2+8分之y) 怎么算