若丨x丨=5,丨y丨=2,且x>y>0,求x十y的值

若丨x丨=5,丨y丨=2,且x>y>0,求x十y的值 若丨x丨=3,丨y丨=5,且丨x+y丨=(x+y),则x-y的值为 ,已知x 若丨x丨=5,丨y丨=2,且x＞y＞0,求x+y的值 若丨x丨=5,丨y丨=2,且x>y>0,求x十y的值要格式 若丨x丨=3,丨y丨=5,且丨x-y丨=-(x-y).求丨x-3丨+(y-5)²的值 若丨x丨=3,丨y丨=5,且丨X+Y丨=－X－Y,求X－Y的值 若丨x丨=3,丨y丨=2,且丨x-y丨=y-x,求x+y的值. ：如果x,y表示有理数,且x,y满足条件丨x丨=5,丨y丨=2,丨x-y丨=y-x,求xy+(2x-1)÷y的值 如果x y是有理数且x,y满足条件丨x丨=5,丨y丨=2,丨x-y丨=y-x求x+2y 若丨x+y-3丨+根号2x-y=0,则x-y= 若丨x丨=5,丨y丨=3,且x>0,y>0,求3x+5y的值 若丨x丨=2,丨y丨=3,且2x/y＜0,则x+y=多少?是等于1或-1吗? 若丨2x-5丨+(2x-5y+20)^2=0,求代数式(-2x^2)-2x(5y-2x)=3y(6x-5y)-3y(4x-5y)的值 /x/=8./y/=6求x+y的值若/x/=3/y/=5丨x丨=8,丨y丨=6,求x+y的值;若丨x丨=3,/y/ =5,且丨x-y丨=y-x,再求x+y的值 丨-x丨=丨-2丨,求x的值.已知丨y+1丨=-(-5),求y值.若丨x+1丨=丨-4丨,且x＜0,求x值丨-x丨=丨-2丨,求x的值已知丨y+1丨=-(-5),求y值若丨x+1丨=丨-4丨,且x＜0,求x值已知丨x丨=5,丨y丨=2,且丨x+y丨=x+y,求xy值已知 若丨3x+4y-1丨+(3y+2x-5)²=0,则x= ,y= 丨x丨=3,丨y丨=5,且丨x+y丨=-x-y,求x-y的值 已知丨x丨=7丨y丨=2且丨x+y丨=-(x+y)求x-y的值