如果X/2=Y/3=Z/4,那么(2X-Y+3X)/(X+Y-Z)=________.是(2x-y+3z)/(x+y-z)

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如果X/2=Y/3=Z/4,那么(2X-Y+3X)/(X+Y-Z)=________.是(2x-y+3z)/(x+y-z)如果X/2=Y/3=Z/4,那么(2X-Y+3X)/(X+Y-Z)=_____

如果X/2=Y/3=Z/4,那么(2X-Y+3X)/(X+Y-Z)=________.是(2x-y+3z)/(x+y-z)
如果X/2=Y/3=Z/4,那么(2X-Y+3X)/(X+Y-Z)=________.
是(2x-y+3z)/(x+y-z)

如果X/2=Y/3=Z/4,那么(2X-Y+3X)/(X+Y-Z)=________.是(2x-y+3z)/(x+y-z)
令 X/2=Y/3=Z/4=K
则,X=2K ,Y=3K ,Z=4K
(2X-Y+3X)/(X+Y-Z)
=(4K-3K+6K)/(2K+3K-4K)
=7K/K
=7
(2X-Y+3Z)/(X+Y-Z)
=(4K-3K+12K)/(2K+3K-4K)
=13K/K
=13
分子是哪个?(2X-Y+3X) ,(2X-Y+3Z) 我做了两个你看一下.

13(把XZ用Y表示)