解方程组:{z=-11,4x+2y+z=3,25x+5y+z=60

解方程组：x+y+z=4,x+y+2z=5,3x+y-z=6 解方程组{2x+3y+z=11,x+y+z=0,3x-y+z=-2. 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 解三元一次方程组：x+y+z=6,y-z=4,x-y-2z=3, 帮我解方程组：3x-y+z=3,2x+y-3z=11,x+y+z=12.x=?y=?z=? 解三元一次方程组：(1)x+2y+3z=11x-y+4z=10x+3y+2z=2(2)x:y=3:5y:z=5:6x+y 方程组2x+4y+3z=9,3x-2y+5z=11,5x-6y+7z=13的解是什么