解方程{①2x-y+z=6②-3x+2y-z=-9③x+y-2y=-1

解方程：x+y+z=0 ① 4x+2y+z=3 ② 9x+3y+z=6 ③ 解方程{①2x-y+z=6②-3x+2y-z=-9③x+y-2y=-1 解三元一次方程组 ①2x-y+z=1 3x+y -2z=2 X+2y-z=3 ②x-4y+z=-3 2x+Y-Z=18 X-Y-Z=7 ③4x+4y+2z=7 6X-4y-z=6 2x-y+z=1 解方程：①2x+y+z=2②x-3y-5z=6③3x+2y=0 解方程:x+2y+3z=8 x+3y+5z=6求x+y=? x+y-z=6 x-3y+z=1 3x+2y 解方程 {x+y-2z=5① {2x-y+z=4② {2x+y-3z=10③ 解一元三次方程 要过程 解方程x-y+z=5,①2x+y-3z=15②,3x-2y+z=16③ 解方程｛x+y+z=4 ①,2x+y+3z=9 ②,x+3y+2z=14 ③ 3x-y+z=3 ①2x+y-3z=11 ②x+y+z=12 ③解这个方程 解方程 x+y+z=0 4x+2y+z=3 9x-3y+z=28解方程x+y+z=04x+2y+z=39x-3y+z=28 解方程：｛3x-y-z=2,｛3y-x-z=-10,｛3z-x-y=10 3x-y+z=3 2x+y-3z=11 x+y+z=12 解方程 解方程：x+z=y (1) ,7z-(x+y)=2 (2) ,x+y+z=14 (3) 解方程 x+y+z=10,x+3y+2z=17,y-x+3z=8 解三元一次方程,①{x+y-z=0{ x+2y+z=13{2x-3y+2z=5②｛x+y-z=11｛y+z-x=5｛z+x-y=1③｛x+y=1｛y+z=6｛z+x=3 2x-3y-z=-7 5x+3y=11 3y+z=6解方程 x+y/2=z+x/3+y=z/4,...x+y+z=27.解方程组.X+Y/2=Z+X/3=Y+Z/4,X+Y+Z=27.解方程