题目内容
解方程.
| x-
| x+
| x+
| ||||||||||||||
x-
|
|
(1)
+x=1,
+x-
=1-
,
x=
;
(2)x-
=
,
x-
+
=
+
,
x=
;
(3)x+
=
,
x+
-
=
-
,
x=
;
(4)x+
=
,
x+
-
=
-
,
x=
;
(5)x-
=
,
x-
+
=
+
,
x=
;
(6)
+x=
,
+x-
=
-
,
x=
.
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
x=
| 1 |
| 2 |
(2)x-
| 3 |
| 7 |
| 1 |
| 2 |
x-
| 3 |
| 7 |
| 3 |
| 7 |
| 1 |
| 2 |
| 3 |
| 7 |
x=
| 13 |
| 14 |
(3)x+
| 2 |
| 3 |
| 7 |
| 6 |
x+
| 2 |
| 3 |
| 2 |
| 3 |
| 7 |
| 6 |
| 2 |
| 3 |
x=
| 1 |
| 2 |
(4)x+
| 2 |
| 9 |
| 2 |
| 3 |
x+
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 3 |
| 2 |
| 9 |
x=
| 4 |
| 9 |
(5)x-
| 3 |
| 8 |
| 7 |
| 12 |
x-
| 3 |
| 8 |
| 3 |
| 8 |
| 7 |
| 12 |
| 3 |
| 8 |
x=
| 23 |
| 24 |
(6)
| 5 |
| 24 |
| 2 |
| 3 |
| 5 |
| 24 |
| 5 |
| 24 |
| 2 |
| 3 |
| 5 |
| 24 |
x=
| 11 |
| 24 |
练习册系列答案
相关题目