题目内容
已知2a-2b=ab,则
-
的值等于______.
| 1 |
| a |
| 1 |
| b |
∵2a-2b=2(a-b)=ab,
∴
-
=
=-
=-
=-
.
故答案为:-
.
∴
| 1 |
| a |
| 1 |
| b |
| b-a |
| ab |
| a-b |
| ab |
| a-b |
| 2(a-b) |
| 1 |
| 2 |
故答案为:-
| 1 |
| 2 |
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| b-a |
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| a-b |
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| 2(a-b) |
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