解方程组5x+3y-z=0 5x-3y+z =-4 10x+y+z=-5 急,拜托了.
解方程组5x+3y-z=0 5x-3y+z =-4 10x+y+z=-5 急,拜托了.
解方程组:x+y+z=4,x+y+2z=5,3x+y-z=6
已知方程组4x-5y+2z=0 x+2y=3z 则x:y:z
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
解三元一次方程组5x+3y-z=0 5x-3y+z=-4 10x+y+2z=-5 2/3
解三元一次方程组:5x+y+z=1(1) 2x-y+2z=1(2) x+5y-z=-4(3) 急
已知x,y,z满足方程组:4x-5y+2z=o;x+4y-3x=0,求x:y:z的值
已知方程组3x+5y+3z=0,3x-5y-8z=0,并且z≠0,求x:z和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
解方程组:x+3y=5.y-2z=5.x+z=5
x:y:z=2:3:5解方程组 2x+3y-z=16