x+2y-3z=0 5x-6y+7z=0 然后:变形为 5X+10Y-3Z=0(1式) 5X-6Y+7Z=0(2式) 1式-2式:16Y-22Z=O Y=11Z/8 3X+6Y-9Z=0 (3式)
x+y+z=16 5x+6y+7z=10
4个回答
相关问题
-
3x+7y+z=5 ,4x+10y+z=6 ,x+y+z=
-
x-y=3/2 x+z=7/10 y-z=-6/5
-
①:5×+y+z=6,②:x+5y+z=-2,③:x+y+5z=10;
-
急x+y+z=36,0.5x+y+2/3z=20,10x+7y+6z=183
-
13.56x+10.16y+6.82z=1o.7 8.7x+43y+15.7z=11.1 x+y+z=87.25
-
x+y+z=15 x+2y+z=16 2x+y+z=7
-
2x+5y+4z=6,3x+y-7z=-4,x+y-z=?
-
{3x-2y+5z=02x+5y-10z=192x+3y+15z=13{x+y=3y+z=5x+z=6
-
已知4x-3y-6z=0,x+2y-7z=0,求5x+2y-z/2x-3y-10z
-
以知方程组{⑴4x-2y-6z=0⑵x-5y-7z=0.求7x+2y+6z/3x+5y+7z的值.