设x/3=y/4=z/2,则x−2y+3zx−3y−z=_.

问题描述:

x
3
y
4
z
2
,则
x−2y+3z
x−3y−z
=______.

x
3
y
4
z
2
=k,
则x=3k,y=4k,z=2k.
x−2y+3z
x−3y−z
=
3k−8k+6k
3k−12k−2k
k
−11k
=−
1
11

故答案为-
1
11