题目内容
解方程．
| 1-
|
|
（1）
| 1 |
| 8 |
| 1 |
| 8 |
4x=
| 1 |
| 8 |
4x÷4=
| 1 |
| 8 |
x=
| 1 |
| 32 |
（2）1-
| 3 |
| 7 |
| 1 |
| 21 |
1-
| 3 |
| 7 |
| 3 |
| 7 |
| 1 |
| 21 |
| 3 |
| 7 |
| 3 |
| 7 |
| 1 |
| 21 |
| 3 |
| 7 |
| 1 |
| 21 |
| 1 |
| 21 |
| 1 |
| 21 |
| 3 |
| 7 |
| 20 |
| 21 |
| 3 |
| 7 |
| 3 |
| 7 |
| 20 |
| 21 |
| 3 |
| 7 |
x=
| 20 |
| 9 |
（3）
| 5 |
| 9 |
| 1 |
| 12 |
| 7 |
| 12 |
| 5 |
| 9 |
| 1 |
| 12 |
| 1 |
| 12 |
| 7 |
| 12 |
| 1 |
| 12 |
| 5 |
| 9 |
| 2 |
| 3 |
| 5 |
| 9 |
| 5 |
| 9 |
| 2 |
| 3 |
| 5 |
| 9 |
x=
| 6 |
| 5 |
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