解方程组:X+Y+Z=100,10X+5Y+0.5Z=100
解三元一次方程组,100x+10y+z=27(x+y+z) {x+y-z=1 (100z+10y+x)-(100x+10
100x+10y+z=27(x+y+z) x+z=y+1 100z+10y+x-100x-10y-z=99 解方程组
解三元一次方程组X+Y+Z=100 6X+4Y+Z=200
解方程组{x(x+y+z)=6,y(x+y+z)=12,z(x+y+z)=18
解方程组x:y:z=1:4:5(1),x+y+z=100(2)
解方程组x+y-z=-5,x-y-z=1,x-y+z=15
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
方程组x-y-z=5 y-x-z=1 z-x-y=-15的解是?
解方程组2x+y-z=7 x+y+z =1 2x-y-z=5
解方程组 z=x+y 2x-3y+2z=5 x+2y-z=3
怎样解三元一次方程组(1)x+y-z=11,y+z-x-5,z+x-y=1