3x-y+2z=13 (1)
2x+y-3z=11 (2)
x+y+z =12 (3)
(1)+(2)
5x-z=24 (4)
(1)+(3)
4x+3z=25 (5)
(4)×3+(5)
19x=97
x=97/19
z=5x-24=29/19
y=12-x-z=102/19
一道方程组题目 3x-y+2z=13{ 2x+y-3z=11x+y+z =12
2个回答
相关问题
-
解下列方程组3x-y+z=3,2x+y-3z=11,x+y+z=12
-
解方程组：-x+2y+3z=12 2x-2y+5z=13 3x+2y+z=10
-
解三元一次方程组﹛3y-y+z=3 2x+y-3z=11 x+y+z=12 ﹛x+y-2z=5 2x-y+z=4 2x+
-
解方程组{2X-Y+Z=-3①,X+3Y-2Z=13②,3X-2Y-Z=2③
-
x+2y+z=11,x+y+2z=12,2x+y+z=13
-
1.x+y+z=21,x-y=1,2x+z-y=13.2.3x+2y+z=13,x+y+2z=7 ,2z+3y-z=12
-
{3x+2y+z=13 x+y+2z=7 2x+3y-z=12,求x,y,z
-
{3x+2y+z=13 {x+y+z=7 {2x+3y-z=12
-
三元一次方程组题目x+y-z=11 y+z-x=5 x-y+z=1x+y=4 y+z=3 x+z=5若已知x-3y+2z
-
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}