题目内容
若
=
,则
=
.
| b |
| a |
| 3 |
| 2 |
| a+b |
| b |
| 5 |
| 3 |
| 5 |
| 3 |
分析:由
=
,根据比例的性质得
=
,再根据比例性质得到
=
=
.
| b |
| a |
| 3 |
| 2 |
| a |
| b |
| 2 |
| 3 |
| a+b |
| b |
| 2+3 |
| 3 |
| 5 |
| 3 |
解答:解:∵
=
,
∴
=
,
∴
=
=
.
故答案为
.
| b |
| a |
| 3 |
| 2 |
∴
| a |
| b |
| 2 |
| 3 |
∴
| a+b |
| b |
| 2+3 |
| 3 |
| 5 |
| 3 |
故答案为
| 5 |
| 3 |
点评:本题考查了比例的性质:若
=
,则
=
;若
=
,则
=
.
| b |
| a |
| d |
| c |
| a |
| b |
| c |
| d |
| b |
| a |
| d |
| c |
| a+b |
| a |
| c+d |
| c |
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