10y+8x-6z=10 5x+9y-6z=8 y+x+z=-100解法!详细步骤,要文字!

解方程组：{x(x+y+z)=6 {y(x+y+z)=9 {z(x+y+z)=10 接下列方程组 1.x+y=7,y+z=8,x+z=9,2.5x+y+z=6,x+5y+z=-2,x+y+5z=10 三元一次方程组,1.x-2y+z=9 2x+y+3z=10 3x+2y1.x-2y+z=92x+y+3z=103x+2y-z2.3x-5y+2z=14x+5y-z=5X-5y+3z=-23.7x+2y-z=76x-y+z=74x+3y+z=94.4x+3y-2z=-75x-6y+z=12x+z=-25.2x+3y-4z=-23x-2y+5z=262x+5z=31 6x-y-z=3 2x-4y+8z=5 3x-6y-z=10 y z 分别等于几?大虾 10y+8x-6z=10 5x+9y-6z=8 y+x+z=-100解法!详细步骤,要文字! X、Y、Z是三个非零自然数,且X乘6/5＝Y乘8/7＝Z÷10/9,那么X、Y、Z按照从小到大排列是 A、X>Y>Z B、Z>X>Y 方程组3x+y+2z=10,2x+3y-z=9,x+y+z=6 x+y=6,y+z=8,x+z=10求x、y、z的值 {2x+3y-4z=-5 x+y+z=6 x-y+3z=10 (4x-2y-z)-{5x-[8y-2z-(x-2y)]-x-(3y-10z)}=? 若X/10=Y/8=Z/9则X+Y+Z/Y+Z=? X/10=Y/8=Z/9,则X+Y+Z/2Y-3Z 方程组{x/2+y/3-z=-5,x/3-y/2+z/2=10,x/2-y/3-z/4=6,求x,y,z 已知4x-3y-6z=0,x+2y-7z=0,求5x+2y-z/2x-3y-10z 利用matlab计算：3x+4y-7z-12w=4,5x-7y+4z+3w=-3,x+8z-5z=9,-6x+5y-2z+10w=-8 (4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian 解方程组2x+y+x=10 x+2y+z=-6 x+y+2z=82x+y+x=10 x+2y+z=-6x+y+2z=82x+y+z=10x+2y+z=-6x+y+2z=8前三个方程不算了，下面三个是正确的 k为何值时,方程组{2x-y=k x+2y=3的解相等解下列方程：{x+y=7 y+z=8 x+z=9{5x+y+z=6 x+5y+z=－2 x+y+5z=10