题目内容
| 解方程. x-
|
3x+
|
(1)x-
x=12,
x=12,
x×5=12×5,
x=60;
(2)3x+
=
,
3x+
-
=
-
,
3x=1,
x=
.
| 4 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
x=60;
(2)3x+
| 3 |
| 7 |
| 10 |
| 7 |
3x+
| 3 |
| 7 |
| 3 |
| 7 |
| 10 |
| 7 |
| 3 |
| 7 |
3x=1,
x=
| 1 |
| 3 |
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