3/(X-Y)+10/(X+Y)=-5 2/(X-Y)-15/(X+Y)=1 解分式方程组
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3/(X-Y)+10/(X+Y)=-52/(X-Y)-15/(X+Y)=1解分式方程组3/(X-Y)+10/(X+Y)=-52/(X-Y)-15/(X+Y)=1解分式方程组3/(X-Y)+10/(X+
3/(X-Y)+10/(X+Y)=-5 2/(X-Y)-15/(X+Y)=1 解分式方程组
3/(X-Y)+10/(X+Y)=-5 2/(X-Y)-15/(X+Y)=1 解分式方程组
3/(X-Y)+10/(X+Y)=-5 2/(X-Y)-15/(X+Y)=1 解分式方程组
x= -3;y= -2;
先解 3x +10y = -5 2x -15y = 1 得到x,y 后
再算X-Y = 1/x X+Y = 1/y；
（x+y-5)*（x+y-5)+（x-y+3)=0 x*x-y*y
已知:3x-5y=0,求x/y,x-y/y,x-y/x
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian
x=3/5y x-10=55%y
5x=10y x+y=3
化简：3（x+y）+5=10y+x
x-y/7 - x+y/10 =1/2 2(x-y)-5(x+y)=3修改、、、、（x-y)/7-(x+y)/10=1/2 2(x-y)-5(x+y)=3
1.5（x+y）+3（x-y）=27（x+y）-3（x-y）=-62.x-y/7 - x+y/10 =1/22(x-y)-5(x+y)=3所谓细节决定成败,
10/x+y+3/x-y=-5 15/x+y-2/x-y=-1（用换元法解此方程组）
{ x-y/7-x+y/10=1/2 {2(x-y)+5(x+y)=3
{ x-y/7-x+y/10=1/2 {2(x-y)+5(x+y)=3
解分式方程：10/(x+y)+3/(x-y)=-5,15/(x+y)-2/(x-y)=-1
3/(X-Y)+10/(X+Y)=-5 2/(X-Y)-15/(X+Y)=1 解分式方程组
已知x,y满足约束条件 2x+5y>=10 2x-3y>=-6 2x+y
已知x,y满足约束条件{2x+5y>=10,2x-3y>=-6,2x+y
3(2X+Y)+(2(2x-Y)=6 (8X+4y)-(10X-5Y)=2
(x+y)/6+(x-y)/10=1,(x+y)/6-(x-y)/10=5