x/2=y/3=z/4不等于0,求2x-y+3z/3y

问题描述:

x/2=y/3=z/4不等于0,求2x-y+3z/3y

x/2=y/3=z/4=k
x=2k
y=3k
z=4k
2x-y+3z/3y
=(4k-3k+12k)/9k
=13/9