已知x/2=y/3=z/4,且2x+3y-z=18,求x.y.z的值
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已知x/2=y/3=z/4,且2x+3y-z=18,求x.y.z的值
已知x/2=y/3=z/4,且2x+3y-z=18,求x.y.z的值
已知x/2=y/3=z/4,且2x+3y-z=18,求x.y.z的值
x/2=y/3=z/4,设X=2K,Y=3K,Z=4K
则2x+3y-z=18为4K+9K-4K=18
解得K=2
所以大括号X=4,Y=6,Z=8
y=1.5x
z=2x
2x+3y-z=2x+4.5x-2x=18
x=4
y=6
z=8
X=4
Y=6
Z=8
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