x+y-z=6 ① x-3y+2z=1② 3x+2y-z=3③ 求方程组解.
解方程组2x+y-3z=1,x-2y+z=6,3x-y+2z=9求x,y,z的值
解方程组 ①x+y-z=6 ②x-3y+2z=1 ③3x+2y-z=4 求x、y、z的值
解方程组 ①x+y-z=0②x-3y+2z=1 ③3x+2y-z=4 求x,y,z的值
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}
解方程组:x-2y+z=-1,x+y+z=2,x+2y+3z=-1
解方程组:x+y+z=4,x+y+2z=5,3x+y-z=6
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
解方程组:2x+3y+z=3①,7x+6y+z=4②,x+y+z=7/3③.
解方程组:{x+y-2z=-3① {2x+6y+z=2② {x+y+z=0③
解方程组x+y+z=3 ① 3X+2Y+Z=2 ① 2x+3y+2z=7 ② X+3Y+2Z=1 ② x-y=0 ③ 2
x/2=y/3=z/4 x+y+z=18 求方程组解
求方程组 {x+y-z=1 2x+3y-z=13