题目内容
解方程.
x-
x=1
5x-
=
.
| 2 |
| 3 |
| 1 |
| 5 |
5x-
| 5 |
| 6 |
| 5 |
| 12 |
(1)
x-
x=1,
x=1,
x×
=1×
,
x=
,
(2)5x-
=
,
5x-
+
=
+
,
5x=
,
5x÷5=
÷5,
x=
.
| 2 |
| 3 |
| 1 |
| 5 |
| 7 |
| 15 |
| 7 |
| 15 |
| 15 |
| 7 |
| 15 |
| 7 |
x=
| 15 |
| 7 |
(2)5x-
| 5 |
| 6 |
| 5 |
| 12 |
5x-
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 12 |
| 5 |
| 6 |
5x=
| 5 |
| 4 |
5x÷5=
| 5 |
| 4 |
x=
| 1 |
| 4 |
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