9X+4Y+Z=10,9X+2Y+3Z=1,3X-4Y+2Z=5怎么解?不要就答案的 快,
(x-2y+z)/9=(2x+y+3z)/10=-(3x+2y-4z)/3=1 连等,求x,y,z,
解方程一;{x+y-z=6,x-3y+2z=1,3x+2y-z=-7.②{3x+4z=7,2x+3y+z=9,5x-9y
解方程组2x+y-3z=1,x-2y+z=6,3x-y+2z=9求x,y,z的值
已知x::y:z=3:4:5,(1)求x+y分之z的值;(2)若x+y+z=6,求x,y,z.
解方程组2x+3y+z=38.3x+4y+2z=56.4x+5y+z=66 快,我会追加分分的
2x+4y+3z=9 3x-2y+5z=11 5x-6y+7z=13 这个方程怎么解?
解方程组 X:Y:Z=1:2:3 2X-y+z=9 怎么解啊!快啊!
解方程组1、4x+9y=12,3y-2z=1,2x+6z=32、3x-y+2z=3,2x+y-3z=11,x+y+z=1
x-2+z/9=2x+y+3z/10=-(3x+2y-4z)/(-3)=1,怎么解
已知:2X-3y+2z=0,x+4Y-9/2z=0求:X:Z的值.X:y:Z的值.X+2y+X/X+y+Z的值. 已知:
(1)3x+4z=7;2x+3y+z=9;5x-9y+7z=8 (2)3x+4y+z=14;x+5y+2z=17;2x+
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuai