18x + 9y + 3z = 63 12x + 11y + 6z = 50 14x + 6y + 10z = 48 怎么解

解三元一次方程组!请写具体的过程!（1）2x+3y=10 (2)x:y=3:2 (3)4x-9z=17 (4)0.4x+0.3y-0.2z=45z+2z=6 y:z=5:4 3x+y+15z=18 0.6x-0.5y+0.3z=53y+5z=4 x+y+z=66 x+2y+3z=2 0.3x+0.2y+0.5z=22第一个错了！（1）2x+3y=10 5z+2x=63y+5z=4 ..1.x+y+z=26,2.4y+3z=7,y-z=1,3x+2z=17,x+2y-z=18 9x-7y=173.x-7y+3z=17 4.2x+4y+3z=95x-6y-z=24 3x-2y+5z=113x+7y-2z=1 5x-6y+7z=131.x+y+z=26,y-z=1x+2y-z=18 2.4y+3z=7,3x+2z=11,9x-7y=17 3.x-7y+3z=17 5x-6y-z=24 3x+7y-2z=14.2x+4y+3z=93x-2y+5z=11 5x-6y+7z=13 4x-9z=17 3x+y+15z=18 x+2y+3z=2x+y+z=26 x-y=1 2x+z-y=18 解三元一次方程 {y=2x-1 {3x+y+5z=9 {x+2y=3z=6 {x+y+z=26 {x-y=1 {2x-y+z=18 方程组 (1) x+2y-3z=12 x-3y+2z= - 13 x-y-z=0 (2) x+ y=z 5x-y+z=18 2x+5y+3z= -1 x:y:z=2:1:5,2x+3y-z=18,求x,y,z,值 x-y+2z=-1,2x+y-z=-1,3x-2y-2z=-9 x+y+z=18,x.y是z的1/3,求x,y,z的值 x=2y-9z x+2y-3z=2 x-2y+6z=1 已知｛2x-y-z=0,3x-9y+z=0求1,x:y:z 解三元一次方程组.速回.（1）X+Y+Z=25 X-Y=1 2X+Y-Z=18（2）X-Y-Z=0 X+Y-3Z=4 2X+3Y-5Z=14（3） X-2Y=-9 Y-Z=3 2Z+x=47（4）3X-y+z=4 2X+3Y-Z=12 X+Y+z=-28（5）4X+9Y=13 3y-2Z=-1 7X+5Z=17速回 我会奖励积分 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 X-Y-Z=7 ③4x+4y+2z=7 6X-4y-z=6 2x-y+z=1 问5道3元一次方程组题目(1） y=2x-7{ 5x+3y+2z=23x-4z=4 (2) 4x+9y=12{3y-2z=17x+5z=19/4(3）4x-9z=17{3x+y+5z=18x+2y+3z=2(4) 2x+4y+3z=9{3x-2y+5z=115x-6y+7z=13(5) x:y=3:2{y:z=5:4x+y+z=66 18x + 9y + 3z = 63 12x + 11y + 6z = 50 14x + 6y + 10z = 48 怎么解 解三元一次方程组 x+y+z=26 x-y+xz=1 2x-y+z=18 是x+y+z=26 x-y+2z=1 2x-y+z=18 刚刚发错了。x-y/2-9=y/3 3（x+y）=2（x+y）-2 数学.. 方程组解答. 1、x+2y-z=6和2x+y+z=9和3x+4y+z=18 3Q一定要有过程.1】 x-2y= ─9 2】3x-y+z=4 3】y=2x-7 4】4x+9x=12 y-z=3 2x+3y-z=12 5x+3y+2z=2 3y-2z=1 2z+x=47 x+y+z=6 3x-4z=4 7x+5z=4/19 4】x：y=3：2 5】x+y+z=26 6】x+y=3 7】x-y-z=2 y：z=5：4 x-y=1 y+z=5 y-z-x= ─5 x+y+z=66 2x-y+z=18 方程题4道1.4(x-y-1)=3(1-y)+3.5 (x/2)+(y/3)=2 2.2(x-y)/3-(x+y)/4=13/6 6(x+y)-4(2x-y)=16 3.3x-y+z=3 2x+y-3z=9 x+y+z=12 4.5x-4y+4z=13 2x+7y-3z=19 3x+2y-z=18