问题 解答题
已知
x
3
=
y
4
=
z
5
,则
x+4y+2z
8x+y+6z
=______.
答案

x
3
=
y
4
=
z
5
=k,得到x=3k,y=4k,z=5k,

x+4y+2z
8x+y+6z
=
3k+16k+10k
24k+4k+30k
=
1
2

故答案为:

1
2

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