已知x:y:z=2:3:5,且3x+4z-2y=40,求x,y,z的值.
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已知x:y:z=2:3:5,且3x+4z-2y=40,求x,y,z的值.已知x:y:z=2:3:5,且3x+4z-2y=40,求x,y,z的值.已知x:y:z=2:3:5,且3x+4z-2y=40,求
已知x:y:z=2:3:5,且3x+4z-2y=40,求x,y,z的值.
已知x:y:z=2:3:5,且3x+4z-2y=40,求x,y,z的值.
已知x:y:z=2:3:5,且3x+4z-2y=40,求x,y,z的值.
x:y:z=2:3:5
则有
X/2=Y/3=Z/5
设X/2=Y/3=Z/5=K
则X=2K,Y=3K,Z=5K
3x+4z-2y=3*2K+4*5K-2*3K=20K=40 ==>K=2
所以 X=4,Y=6,Z=10
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