x+y+z=36 9x+y+z=100 2x+2y+4z=100
1个回答
x+y+2z=50 x+y+z=36 可知z=14
所以x+y=22
因为9x+y=86
所以x=8 y=14
相关问题
9x+y+z=100 2x+2y+4z=100
解方程 Y=X+Z Y-Z=2 100Z+10Y+X-(100X+10Y+Z)=99
X-100=(Y+Z)×2/13 y-100=(x+z)×9/16 z-90=(x+y)×1/3
解方程组:15X+9Y+Z=100 X+Y+Z=100
解一道三元一次方程x+y+z=13,y-2=z,100z+10y+x+99=100x+10z+y.
9x^4+12x^2y^2+4y^4 9-12(x+y)+4(x+y)^2 x^2+2x(y+z)+(y+z)^2 36
解方程组x+y+z=100,x-(x+y)=2,z-y=7..
x-2y+z=9 3x+2y-2z=4 2x-z=9
(追100)解方程组:x+y/3=x+z/9=y-z/6 x+y+z=5
(追100)解方程组:x+y/3=x+z/9=y-z/6 x+y+z=5