解3元1次方程组如下; 2X-Y=7 5X+3Y+2Z=2 3X-4Z=4
解3元1次方程组如下; 2X-Y=7 5X+3Y+2Z=2 3X-4Z=4
解3元1次方程组如下; 4X-9Z=17 3X+Y+15Z=18 X+2Y+3Z=2
3元1次方程组 x+y-z=4 (1) 2x-y=5-x (2) x-3y+z=-2 (3)
解3元1次方程组3元1次方程组2x+3y=10x+z=5z+y=7.5
帮忙解3元1次方程组:3x+4y+z+14 x+5y+2z=17 2x+2y-z=3z求解需要步骤,
解方程组:x+y+z=4,x+y+2z=5,3x+y-z=6
解方程组:2x+3y+4z=20,x+y+z=7
解2个3元一次方程组 1:{x+y+z=4 {2x-y+z=3 {3x+2y-z+18 2:{5x-4y+4z=13 {
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.
已知方程组4x-5y+2z=0 x+2y=3z 则x:y:z