题目内容
若-
=
,则a的值是______.
| 3 | a |
| 3 |
| ||
根据题意,-
=
,即-
=
=
,即得-a=
,故a的值为-
.
| 3 | a |
| 3 |
| ||
| 3 | a |
| 3 | - a |
| 3 |
| ||
| 7 |
| 8 |
| 7 |
| 8 |
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相关题目
若-
=
,则a的值是( )
| 3 | a |
| 3 |
| ||
A、
| ||
B、-
| ||
C、±
| ||
D、-
|