x=2y-9z 2x+4y-6z=4 3x-6y+18z=3

三元一次方程x+y+z=0 4x+2y+z=3 9x+3y+z=6x+y+z=04x+2y+z=3 9x+3y+z=6 {x+y+z=0 {4x+2y+z=3 {9x+2y+z=6 {x+y+z=0 4x+2y+z=3 9x+3y+z=6 x+y+z+2,4x+2y+z+2,9x+3y+z=6解方程组 三元一次方程组,1.x-2y+z=9 2x+y+3z=10 3x+2y1.x-2y+z=92x+y+3z=103x+2y-z2.3x-5y+2z=14x+5y-z=5X-5y+3z=-23.7x+2y-z=76x-y+z=74x+3y+z=94.4x+3y-2z=-75x-6y+z=12x+z=-25.2x+3y-4z=-23x-2y+5z=262x+5z=31 x+2y=3x+2z=4y+z 求x:y:z x+y/2=z+x/3=y+z/4 x+y+z=27 3x-y+z=4,2z+3y-z=12,x+y+z=6的解 三元一次方程解 1.{x+y-z=5 {3x+2y+z=2 {2x-2y+z=-31.{x+y-z=5 2.{9x-5y+x=-6 3.{x-y=3 4.{x+y=3 5.{4x-2y+z=7{3x+2y+z=2 {9x+y-2z=3 {x+z=7 {y+z=4 {2x-y-3z=28{2x-2y+z=-3 {-9x+3y-5z=0 {y-z=6 {z+x=5 {x+y-2z=13 ..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 x+y=5 2x+3y-z=9 x-y+z=4 2x+z=10 x+y-z=4 3x-y-z=0 解方程 x+y+z=0 4x+2y+z=3 9x-3y+z=28解方程x+y+z=04x+2y+z=39x-3y+z=28 x=y/z=z/3,x+y+z ＝12,求2x+3y+4z是多少, 2x+y-z=2 x-y+2z=2 3x+2y+4z=9 2x+y-z=2 x-y+2z=2 3x+2y+4z=9 初二数学x+2y+4z=6,2x+y-z=9,求x+y+z=? 2x-y+2z=6 3x+y-3z=-4 x+y+z=6