以下是15道常见的一元一次方程题及其解答，适合练习和复习。
| 题号 | 方程 | 解 | 答案 |
| 1 | x + 3 = 7 | x = 4 | 4 |
| 2 | 2x = 10 | x = 5 | 5 |
| 3 | x - 5 = 3 | x = 8 | 8 |
| 4 | 3x + 2 = 11 | x = 3 | 3 |
| 5 | 4x - 6 = 10 | x = 4 | 4 |
| 6 | x + 2 = 9 | x = 7 | 7 |
| 7 | 5x = 20 | x = 4 | 4 |
| 8 | x - 4 = 6 | x = 10 | 10 |
| 9 | 2x + 5 = 15 | x = 5 | 5 |
| 10 | 6x = 30 | x = 5 | 5 |
| 11 | x + 7 = 12 | x = 5 | 5 |
| 12 | 3x - 4 = 5 | x = 3 | 3 |
| 13 | 7x = 21 | x = 3 | 3 |
| 14 | x - 8 = 2 | x = 10 | 10 |
| 15 | 4x + 3 = 19 | x = 4 | 4 |
通过这些题目，可以巩固解方程的基本方法，提升计算准确率。
