方程组①x/2=y/3=z/4②x+2y+3z=80
解方程组:x+2y+3z=80,x/2+y/3=z/4,
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{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:x+y+z=4,x+y+2z=5,3x+y-z=6
求解三元一次方程组:{x+y/2=y+z/3=z+x/4 x+y+z=27
已知方程组4x-5y+2z=0 x+2y=3z 则x:y:z
解方程组:{x/2=y/3=z/4=z/4 {x+2y+3z=80
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
1.解下列方程组,①y-2z=1,x+3z=-1,3x-5y+z=21.②x+y+2z=7,x-2y-z=-4,2x+3
解方程组:2x+3y+z=3①,7x+6y+z=4②,x+y+z=7/3③.