题目内容
| 解方程: 5x-
|
|
|
(1)5x-
=2.25,
5x-
+
=2.25+
,
5x=3,
5x÷5=3÷5,
x=0.6;
(2)
X+
X=
,
x=
,
x÷
=
÷
,
x=
;
(3)
x÷
=12,
x÷
×
=12×
,
x=3,
x÷
=3÷
,
x=4.5.
| 3 |
| 4 |
5x-
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
5x=3,
5x÷5=3÷5,
x=0.6;
(2)
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 4 |
| 5 |
| 6 |
| 3 |
| 4 |
| 5 |
| 6 |
| 5 |
| 6 |
| 3 |
| 4 |
| 5 |
| 6 |
x=
| 9 |
| 10 |
(3)
| 2 |
| 3 |
| 1 |
| 4 |
| 2 |
| 3 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
x=4.5.
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