题目内容
解方程.
X-
|
X+
|
5X-4=36. |
(1)X-
X=20,
X=20,
X÷
=20÷
,
X=100;
(2)X+
X=
,
X=
,
X÷
=
÷
,
X=
;
(3)5X-4=36,
5X-4+4=36+4,
5X=40,
5X÷5=40÷5,
X=8.
| 4 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
X=100;
(2)X+
| 4 |
| 3 |
| 1 |
| 2 |
| 7 |
| 3 |
| 1 |
| 2 |
| 7 |
| 3 |
| 7 |
| 3 |
| 1 |
| 2 |
| 7 |
| 3 |
X=
| 3 |
| 14 |
(3)5X-4=36,
5X-4+4=36+4,
5X=40,
5X÷5=40÷5,
X=8.
练习册系列答案
相关题目