题目内容
解方程.
x-
=
x+
=
x+
=
.
x-
| 5 |
| 6 |
| 2 |
| 15 |
x+
| 2 |
| 3 |
| 14 |
| 3 |
x+
| 2 |
| 9 |
| 7 |
| 9 |
(1)x-
=
,
x-
+
=
+
,
x=
;
(2)x+
=
,
x+
-
=
-
,
x=4;
(3)x+
=
,
x+
-
=
-
,
x=
.
| 5 |
| 6 |
| 2 |
| 15 |
x-
| 5 |
| 6 |
| 5 |
| 6 |
| 2 |
| 15 |
| 5 |
| 6 |
x=
| 29 |
| 30 |
(2)x+
| 2 |
| 3 |
| 14 |
| 3 |
x+
| 2 |
| 3 |
| 2 |
| 3 |
| 14 |
| 3 |
| 2 |
| 3 |
x=4;
(3)x+
| 2 |
| 9 |
| 7 |
| 9 |
x+
| 2 |
| 9 |
| 2 |
| 9 |
| 7 |
| 9 |
| 2 |
| 9 |
x=
| 5 |
| 9 |
练习册系列答案
相关题目