题目内容
代数式y-
与
-2的值互为相反数,则y=______.
| y-1 |
| 2 |
| y+2 |
| 5 |
由题意知:y-
=-(
-2);
即
=-(
)
解得:y=
.
所以填
.
| y-1 |
| 2 |
| y+2 |
| 5 |
即
| 2y-y+1 |
| 2 |
| y+2-10 |
| 5 |
解得:y=
| 11 |
| 7 |
所以填
| 11 |
| 7 |
练习册系列答案
相关题目
题目内容
| y-1 |
| 2 |
| y+2 |
| 5 |
| y-1 |
| 2 |
| y+2 |
| 5 |
| 2y-y+1 |
| 2 |
| y+2-10 |
| 5 |
| 11 |
| 7 |
| 11 |
| 7 |