已知x/2=Y/3=Z/4且xyz不等于0,求2X+3Y-Z/X-3Y+Z的值.

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已知x/2=Y/3=Z/4且xyz不等于0,求2X+3Y-Z/X-3Y+Z的值.已知x/2=Y/3=Z/4且xyz不等于0,求2X+3Y-Z/X-3Y+Z的值.已知x/2=Y/3=Z/4且xyz不等于

已知x/2=Y/3=Z/4且xyz不等于0,求2X+3Y-Z/X-3Y+Z的值.
已知x/2=Y/3=Z/4且xyz不等于0,求2X+3Y-Z/X-3Y+Z的值.

已知x/2=Y/3=Z/4且xyz不等于0,求2X+3Y-Z/X-3Y+Z的值.
设x/2=y/3=z/4=t则:x=2t y=3t z=4t
(2x+3y-z)/(x-3y+z)=(4t+9t-4t)/(2t-9t+4t)=-9t/3t=-3

令x/2=Y/3=Z/4=k
所以x=2k;y=3k;z=4k;
代入化简出来答案了吧