题目内容
解方程
X+
=
;
4x+125%x=42.
| 3 |
| 4 |
| 1 |
| 8 |
| 1 |
| 2 |
4x+125%x=42.
(1)
X+
=
,
X+
-
=
-
,
X=
,
X×
=
×
,
X=
;
(2)4x+125%x=42
(4+125%)x=42,
5.25x=42,
5.25x÷5.25=42÷5.25,
x=8.
| 3 |
| 4 |
| 1 |
| 8 |
| 1 |
| 2 |
| 3 |
| 4 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 2 |
| 1 |
| 8 |
| 3 |
| 4 |
| 3 |
| 8 |
| 3 |
| 4 |
| 4 |
| 3 |
| 3 |
| 8 |
| 4 |
| 3 |
X=
| 1 |
| 2 |
(2)4x+125%x=42
(4+125%)x=42,
5.25x=42,
5.25x÷5.25=42÷5.25,
x=8.
练习册系列答案
相关题目