解方程组x-y-3z=4 3x+y-z=6 -x+3y+z=8
3个回答
x-z=2.5
y=7/2
相关问题
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+3y-z=8 5x+3y+3z=20 x-6y+z=1
x-y-5z=4,2x+y-3z=10,3x+y+z=8解方程组
解方程组:2x+3y+z=3①,7x+6y+z=4②,x+y+z=7/3③.
解方程组2x-y+2z=6 3x+y-3z=-4 x+y+z=6 问:
解方程组3x+y+z=6,x+3y+z=5,x+y+3z=9
解方程组3x+y+2z=8,x+y+z=5,2x+3y+4z=7
解方程组x+y+z=6 x+2y-3z=4 2x-y+z=5
解方程组 5x+6y-8z=12 x+4y-z=-1 2x+3y-4z=5