题目内容
若
=
,则
=______.
| a |
| b |
| 4 |
| 5 |
| a |
| 2a+b |
∵
=
,
∴
=
;
∴
=2+
=2+
=
;
∴
=
.
故答案是:
.
| a |
| b |
| 4 |
| 5 |
∴
| b |
| a |
| 5 |
| 4 |
∴
| 2a+b |
| a |
| b |
| a |
| 5 |
| 4 |
| 13 |
| 4 |
∴
| a |
| 2a+b |
| 4 |
| 13 |
故答案是:
| 4 |
| 13 |
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