已知5(y+1)-3y>2(2y+3)+4化简|2y-1|-|1+2y|.

已知5(y+1)-3y>2(2y+3)+4化简|2y-1|-|1+2y|. y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) y (3y^2+8y-3)-6y(3y+2y-1)+9y 已知y^2+3y-1=0.求y^2+1/y^2的值 已知(3x+1)(3x-3)-3x+2)^2=-7,(y+7)(y-7)-y(y-7)=0,求8y^2-5y(-y+3x)+4y(-4y-5/2x)的值 已知关于y的方程3分之2y-k-2分之y-k=y-1于方程3(y-2)=4y-5同解 已知x-y=-3y+5,则式子x+2y-1的值是? 已知1/x-1/y=3,则5x+3y-5y/x-2xy-y的值 已知1/x+1/y=5,求(2x-3y+2y)/(x+2xy+y)的值 已知1/x+1/y=5,求2x-3y+2y/-x+2xy-y 5y∧2-(y-2)(3y+1)-2(y+1)(y-5) 2(y-4)(3y+2)-5(-3y+7)(y+1),其中y=-1 已知x/1-y/1=3,则5x+xy-5y/x+2y-y的值为 解方程3y^2-(2y+1)(y-2)=(y-5)(y-1) 解方程：3y^2-(2y+1)(y-1)=(y-5)(y+1)