4X-9Z=17(1)3X+Y+15Z=18(2)X+2Y+3Z=2(3)

4x-9z=17 3x+y+15z=18 x+2y+3z=2x+y+z=26 x-y=1 2x+z-y=18 4x-9z=17 3x+y+15z=18 x+2y+3z=24x-9z=17 3x+y+15z=18 x+2y+3z=2方程组 4X-9Z=17 3X+Y+15Z=18 X+2Y+3Z=2 4x-9z=17 3x+y+15z=18 x+2y+3z=2 ｛4x-9z=17 3x+y+15z=18 x+2y+3z=2 {4x-9z=17{3x+y+15z=18{x+2y+3z=2 ..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 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 2x+3y-z=9,x+y+z=15,5x-4y-z=0 第1题 {x+2y+3z=4{y+z=1{3x+2z=3 第2题{x+y=7{y+z=10{z+x=9 第3题 {x+2y+z=10{2x+3y-z=2{3x+2y+2z=17 解3元1次方程组如下； 4X-9Z=17 3X+Y+15Z=18 X+2Y+3Z=2 4X-9Z=17(1)3X+Y+15Z=18(2)X+2Y+3Z=2(3) 2x+3y+z=13 4x^2+9y^2+z^2-2x+15y+3z=82 求x,y,z ①4x+9y=12 3y-2z=1 7x+5z=19分子4 ②4x-9z=17 3x+y①4x+9y=123y-2z=17x+5z=19分子4②4x-9z=173x+y+15z=18x+2y+3z=2③2x+4y+3z=93x-2y+5z=115x-6y+7z=13这些是三元一次方程组, 解4个三元一次方程组,快1：{y=2x-7,5x+3y+2z=2,3x-4z=42:{4x+9y=12,3y-2z=1,7x+5z=19/43:{4x-9z=17,3x+y+15z=18,x+2y+3z=24:{2x+4y+3z=9,3x-2y+5z=9,3x-2y+5z=11,5x-6y+7z=13 x-y-z=0 4x+8y+z=17 z=1 4X+9Z=12 {3Y-2Z=17X+5Z=4又4分之33X-Y+2Z=3{2X+Y-3Z=11X+Y+Z=66 解下列三元一次方程组:(1)x-z=4,x+y-z=-1,2y-z=1 (2)3x+4z=7,2x+3y+z=9,x-y+z=8