题目内容
若
=2,
=3,则
=______.
| b |
| a |
| c |
| b |
| a+b |
| b+c |
∵
=2,
=3,则a=
,c=3b,代入
=
=
=
.
故答案为:
.
| b |
| a |
| c |
| b |
| b |
| 2 |
| a+b |
| b+c |
| ||
| b+3b |
| ||
| 4b |
| 3 |
| 8 |
故答案为:
| 3 |
| 8 |
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题目内容
| b |
| a |
| c |
| b |
| a+b |
| b+c |
| b |
| a |
| c |
| b |
| b |
| 2 |
| a+b |
| b+c |
| ||
| b+3b |
| ||
| 4b |
| 3 |
| 8 |
| 3 |
| 8 |