题目内容
如果x×
=y×
=1,那么5x-2y=______.
| 15 |
| 14 |
| 14 |
| 15 |
因为x×
=y×
=1,
所以x=
,y=
,
当x=
,y=
时,
5x-2y,
=5×
-2×
,
=
-
,
=
.
故答案为:
.
| 15 |
| 14 |
| 14 |
| 15 |
所以x=
| 14 |
| 15 |
| 15 |
| 14 |
当x=
| 14 |
| 15 |
| 15 |
| 14 |
5x-2y,
=5×
| 14 |
| 15 |
| 15 |
| 14 |
=
| 14 |
| 3 |
| 15 |
| 7 |
=
| 53 |
| 21 |
故答案为:
| 53 |
| 21 |
练习册系列答案
相关题目