已知:(x+3)2+丨y-3丨=0求2x+3y的值

已知丨3x+y-5丨+丨x-2y-4丨=0 求x,y的值 已知丨x+2y+3丨+（2x+y）=0,求x-y的值 已知|2x-3y|+|3x-y-1|=0,求x,y的值. 已知4x-2y=0,求x-y/3x+2y的值 已知x-3y=0,求（2x+y)/(x^2-2xy+y^2)*(x-y)的值 已知x-3y=0,求(2x+y)/(x^2-2xy+y^2)*(x-y)的值. 已知x-3y=0,求(2x+y)(x-y)/x^2-2xy+y^2的值 已知x-3y=0,求2x+y/x-2xy+y乘(x-y)的值 已知y-2x=0,求3x²-2y²/(x+y)(x-y)的值 已知3x*+xy-2y*=0,求(x/y)-(y/x)-(x*+y*)/(xy)的值.*是平方 已知|3x-y|+|x+y|=0,求x-y除以x*y的值. 已知丨x+3|+|2x-y|=o求2(3x-2y)-4[3(x-y)-2(x-2y)]的值