题目内容
若
=
=
,则
=______.
| x |
| 3 |
| y |
| 4 |
| z |
| 5 |
| x+y+z |
| z |
设
=
=
=k,即x=3k,y=4k,z=5k,
故
=
=
.
故答案为
.
| x |
| 3 |
| y |
| 4 |
| z |
| 5 |
故
| x+y+z |
| z |
| 3k+4k+5k |
| 5k |
| 12 |
| 5 |
故答案为
| 12 |
| 5 |
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题目内容
| x |
| 3 |
| y |
| 4 |
| z |
| 5 |
| x+y+z |
| z |
| x |
| 3 |
| y |
| 4 |
| z |
| 5 |
| x+y+z |
| z |
| 3k+4k+5k |
| 5k |
| 12 |
| 5 |
| 12 |
| 5 |