解方程组{X+Y+Z=0①,4X+2Y+Z=5②,4X-2Y+Z=-3③
解三元一次方程组:(一)2x+y+z=4① x-y+3z=3 ②x+z=2③ 二;①2x+y+z=2 ②x+2y+z=5
解方程组:x+y+z=4,x+y+2z=5,3x+y-z=6
已知方程组4x-5y+2z=0 x+2y=3z 则x:y:z
解三元一次方程组 2x=3y① 4y=5z② x+y+z=66③ 第二道 3x-y+z=4① 2x+3y-z=12② x
解三元一次方程组:x+y-z=0 ① 3x+y=6 ① 2x-y+3z=2 ② x+2y-z=5 ② x-4y-2z+6
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.
解方程组:3X+4z=7①,2x+3y+z=9② ,5X-9y+7z=8③,,紧急
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+2y+3z=4,①3x+y+2z=5,②2x+3y+z=6.③ 求x、y、z的值