三元三次方程385x+348y+65z=99212x+220y+42z=48232x+244y+41z=33
三元组方程X+Y=5 Y+Z=12 X+Z=13咋解?
(x+y-z)(x-y+z)=
三元三次方程组问题x+y-z=020x+6z=1405y+6z=90 求x y z
求用矩阵解三元方程x+y-z=3-z+y+2x=42y+z+2x-12=0suppose inverse of the
三元一次方程组数学题x+2y+2z=33x+y-2z=72x+3y-2z=10x-y=2z-x=3y+z=-1x-y-z
X+Y+Z=?
三元方程求救要过程2x+3y+z=383x+4y+2z=564x+5y+z=66x:y=5:3x:z=7:32x-y-z
三元一次方程组x=y-z,x+y-z=2,x-2y+z=0
三元一次方程组x+y/3=x+z/2=y+z/2 x+y+z=28
求解三元一次方程组:{x+y/2=y+z/3=z+x/4 x+y+z=27
解三元一次方程:x+y-z=0,2x+y+z=7,x-3y+z=8
{x+y-z=-2 y+z-x=4 z+x-y=0 三元一次方程组,