x y=59且10x 9y=109时x=-109/5a 1;y=

x y=59且10x 9y=109时x=-109/5a 1;y= (x+y)(x+y-10)+25=0,且x-y=3,求x,y (x+y)(x+y-10)+25=0,且x-y=3,求x,y x y=189且5x 9y=59时x=-59/18a 1;y= x y=59且10x 9y=109时10-109a/5a 1 x.y都是自然数,且x(x-u)-y(y-x)+12,求x.y得值快1且x(x-y)-y(y-x)=12 设x,y是整数,且x^y=y^x,y=9x,则x的值为 如果|X|=4 |Y|=2 且|X+Y|=X+Y 求X+Y 这道题真么做X Y 6 10 Y X如果（X+Y) (Y+X) =(X+6) ,且（X-Y)X+6(X-Y)=(X-Y) ,求X +Y 的值. 若x/2=y/3,且x+y=10,则x=?y=? x>0y>0且1/x+9/y=1求2x+y最小值 x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 已知(x-y)(x-y-6)+9=0,且x+y=5,求x,y的值 已知（x+y）(x+y-10)+25=0,且x-y=2,求x,y的值? y+10x=x+y+9 10y+x=y+10x+27 x,y都是自然数,且x(x-y)-y(y-x)=12,求x+y-xy的值 若x,y是正整数,且满足x(x+y)-y(x+y)=11求x+y的值 若x、y为正整数,且满足x(x+y)-y(x+y)=11,求x,y的值