题目内容
x+
=
x-(
+
)=
．
| 3 |
| 14 |
| 13 |
| 21 |
x-(
| 2 |
| 5 |
| 1 |
| 3 |
| 7 |
| 30 |
（1）x+
=
，
x+
-
=
-
，
x=
；
（2）x-（
+
）=
，
x-
=
，
x-
+
=
+
，
x=
．
| 3 |
| 14 |
| 13 |
| 21 |
x+
| 3 |
| 14 |
| 3 |
| 14 |
| 13 |
| 21 |
| 3 |
| 14 |
x=
| 17 |
| 42 |
（2）x-（
| 2 |
| 5 |
| 1 |
| 3 |
| 7 |
| 30 |
x-
| 11 |
| 15 |
| 7 |
| 30 |
x-
| 11 |
| 15 |
| 11 |
| 15 |
| 7 |
| 30 |
| 11 |
| 15 |
x=
| 29 |
| 30 |
练习册系列答案
优等生题库系列答案
相关题目