解方程组2x+3y+z=38.3x+4y+2z=56.4x+5y+z=66 快,我会追加分分的

解方程组2x+3y+z=38.3x+4y+2z=56.4x+5y+z=66 快,我会追加分分的 解方程组2x+3y+z=38.3x+4y+2z=56.4x+5y+z=66 解方程组：x+y+z=4,x+y+2z=5,3x+y-z=6 解方程组{z=x+y 3x-2y-2z=-5 2x+y-z=3 解方程组 z=x+y 2x-3y+2z=5 x+2y-z=3 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 帮我解方程组：3x-y+z=3,2x+y-3z=11,x+y+z=12.x=?y=?z=? 已知x,y,z满足方程组：4x-5y+2z=o;x+4y-3x=0,求x:y:z的值 解方程组2x=3y,4y=5z,x+y+z=66