题目内容
如果
=
,那么
等于( )
| a |
| b |
| 3 |
| 4 |
| a+b |
| b |
| A.4:3 | B.3:7 | C.7:3 | D.7:4 |
∵
=
,
∴a=
b,
∴
=
=
.
故选D.
| a |
| b |
| 3 |
| 4 |
∴a=
| 3 |
| 4 |
∴
| a+b |
| b |
| ||
| b |
| 7 |
| 4 |
故选D.
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题目内容
| a |
| b |
| 3 |
| 4 |
| a+b |
| b |
| A.4:3 | B.3:7 | C.7:3 | D.7:4 |
| a |
| b |
| 3 |
| 4 |
| 3 |
| 4 |
| a+b |
| b |
| ||
| b |
| 7 |
| 4 |