17400+2500Y=29000X 8500+4000X=12500Y 求X和Y是多少?

17400+2500Y=29000X 8500+4000X=12500Y 求X和Y是多少? 求X、Y的值.17400+2500Y=29000X 和8500+4000X=12500Y.怎么计算?计算程序是什么? 【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2= (x+y)/y=8/3则x/y=__ y/x-y=___ (x+y)/y=8/3则x/y=__ y/x-y=___ y+y+x=10,x+y+x=8,y=?,x=? 12y(x-y)^2-8(x-y)^3=? 已知x-y=8,（x+y)(x-y)=32,求x,y的值 X+Y-8X+10Y+41=O,求X/Y-Y/X的值 求解联立方程 17400+2500Y=29000X 8500+4000X=12500Y 求详细的计算结果,谢谢!17400+2500Y=29000X8500+4000X=12500Y求详细的计算结果,谢谢! （x+2y)(x-2y)-(2y-x)(-2x-y)其中x=8,y=-8 已知X*X+Y*Y+6X-8Y+25=0 求（Y/X)+(X/Y)-2=? [(x+2y)(x-2y)-(x-2y)^2+8y(x+y)]除以4x= x*x+2x-y*y+6y-8=0,x+y不等于2,求x-y的值 Y+X+X=36 Y-X-X=8 X=?Y=? x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 已知x+y/y=11/8,求x-y/x+2y的值. 已知x,y为正整数,并且x*y+x+y=71,x*x*y+x*y*y=880,求3*x*x+8*x*y+3*y*y的值