若x/2=y/3=z/-5,求2x+y+3z/2x的值
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若x/2=y/3=z/-5,求2x+y+3z/2x的值若x/2=y/3=z/-5,求2x+y+3z/2x的值若x/2=y/3=z/-5,求2x+y+3z/2x的值令x/2=y/3=z/-5=kx=2k
若x/2=y/3=z/-5,求2x+y+3z/2x的值
若x/2=y/3=z/-5,求2x+y+3z/2x的值
若x/2=y/3=z/-5,求2x+y+3z/2x的值
令x/2=y/3=z/-5=k
x=2k
y=3k
z=-5k
然后将x y z
代入 (2x+y+3z)/2x=-8k/4k=-2
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