x/3=y/6=z/8 3x+5y-6z=-18 求x,y,z
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x/3=y/6=z/83x+5y-6z=-18求x,y,zx/3=y/6=z/83x+5y-6z=-18求x,y,zx/3=y/6=z/83x+5y-6z=-18求x,y,z令a=x/3=y/6=z/
x/3=y/6=z/8 3x+5y-6z=-18 求x,y,z
x/3=y/6=z/8 3x+5y-6z=-18 求x,y,z
x/3=y/6=z/8 3x+5y-6z=-18 求x,y,z
令 a=x/3=y/6=z/8
所以,x=3a ,y=6a ,z=8a
3x+5y-6z=9a+30a-48a=-9a=-18
所以 a=2
所以x=3×2=6 ,y=6×2=12 ,z=8×2=16
x/3=y/6=z/8 3x+5y-6z=-18 求x,y,z
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