15*x+10*y=25*12
15*x+10*y=25*12
已知实数x,y满足|x|+x+y=10、x+|y|-y=12,则x+y的值?
25X+12Y=7 10X-18Y=-4 3X+8Y=26 5X-12Y=37
(x+y)(x+y+10)+25=0 x-y=3.求x,y的值
10/x+y+3/x-y=-5 15/x+y-2/x-y=-1(用换元法解此方程组)
解方程组 10(x-y)=3(x+y)+15 6(x+y)=4(2x-y)+16
解方程组:(x+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12)
已知x^2+y^2-10x-12y+61=0,求x/y-y/x的值
(x+y)的平方-10x-10y+25=(x+y)-10( )+25
若12x*x+12y*y=25xy,试求x/y的值
解方程组x+y=15 (x+15%x+y+10%y)=17
x²+4y²-2x+12y+10=0求X,Y值