题目内容
已知3a-4b=0,
=______,
=______.
| a |
| b |
| a-2b |
| b |
∵3a-4b=0,
∴3a=4b,a=
b,
∴
=
;
=
=
-2=-
.
∴3a=4b,a=
| 4 |
| 3 |
∴
| a |
| b |
| 4 |
| 3 |
| a-2b |
| b |
| ||
| b |
| 4 |
| 3 |
| 2 |
| 3 |
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题目内容
| a |
| b |
| a-2b |
| b |
| 4 |
| 3 |
| a |
| b |
| 4 |
| 3 |
| a-2b |
| b |
| ||
| b |
| 4 |
| 3 |
| 2 |
| 3 |