解方程组4X+Y=6 9X-2Y+3Z=2 26X-7Y-12Z=24
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}
解方程组2x+6y+3z=6 3x+12y+7z=6 4x+9y+4z=9
解方程组:x+y+z=4,x+y+2z=5,3x+y-z=6
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
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2x+y-3z=1,x-2y+z=6,3x-y+2z=9求x,y,z的值
4x-3y-6z=0,x+2y-7z=0是一个方程组,那么x-y+z/x+y+z的值等于
解三元一次方程组:x+y+z=6,y-z=4,x-y-2z=3,
解三元一次方程组 {2x+y+3z=1 y-2z=4 3x+y=9 {2x+y+z=9 y-2z=-12 3x+y=7
解方程组{6x=4y=3z,2x+y+z=22
解方程组:2x+3y+4z=20,x+y+z=7
解三元一次方程组:{5x+2y-3z=2 x+2y+z=6 7x-2y-4z=26