解方程组x+y+z=9,3x+y-4x=-14,5x+4y+z=22谢谢
解方程组:x+y+z=4,x+y+2z=5,3x+y-z=6
解方程组{6x=4y=3z,2x+y+z=22
解方程组:{x/2=y/3=z/4 2x+y+z=22
解方程组x:y:z=2:3:4;2x+y+z=22
解三元一次方程组:{9x-5y+z=5 {9x+y+4z=14 {-9x+3y-5z=-11
方程组3x+4y+z=14 x+5y+2z=17 2x+2y-z=3 解方程组
解三元一次方程组:{x+y+z=4 2x+y+3z=9 x+3y+2z=14 {3x+y-z=7 x+2y+2z=12
解方程组x-y-3z=4 3x+y-z=6 -x+3y+z=8
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}
解方程组x-4y+z=-3,2x+y-z=18,x-y-z=7.
x+y/2=z+x/3+y=z/4,...x+y+z=27.解方程组.
已知方程组4x-5y+2z=0 x+2y=3z 则x:y:z