360/(x+y)+360/(x-y)=35 360/(x+y)=360+(x-y)=5 y
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360/(x+y)+360/(x-y)=35 360/(x+y)=360+(x-y)=5 y
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
60x+120y=360 x、y等于?
化简 x / y(x+y) - y / x(x+y) =
0.9x=1.1y y+x=360 x=?y=?
[跪求]x+y+(x-y)=360,X与Y的解分别是多少?T_T
x(x+y)(x-y)-y(y+x)(y-x)=(x-y)( )填空
x+x+y+y+y=21 ,x+x+y+y+y+y+y=27 ,x ,y=?
x+x+y+y+y=21 ,x+x+y+y+y+y+y=27 ,x ,y=?
y=x(x
shuxue数学.1.5x+12y=360 7x+16y=500求x 2.x+y=36y-x=28求x
x+x+x+x+y+y+y=56
{(x,y) |x|+|y|
x>y?x:y
x+x+x+y+y=6.4 y+y+y+x+x=7.1 怎么算?
二元函数f(x,y)=x+y/x-y,求f(y/x,x/y)
x-y/x+y=(x-y)²/x²-y²(x≠y)
(x+y-5)*(x+y-5)+(x-y+3)=0 x*x-y*y