| 8 | − | 3 | x | = | 2 |
| - | 3 | x | = | 2 | − | 8 |
| - | 3 | x | = | - | 6 |
| 6 | = | 3 | x |
| 3 | x | = | 6 |
| x | = | 6 | ÷ | 3 |
| = | 6 | × | 1 3 |
| = | 2 | × | 1 |
| x | = | 2 |
| x | + | 2 | x | = | 99 10 |
| 方程左边 = | 3 | x |
| 3 | x | = | 99 10 |
| x | = | 99 10 | ÷ | 3 |
| = | 99 10 | × | 1 3 |
| = | 33 10 | × | 1 |
| x | = | 33 10 |
| x | = | 3.3 |
| 3 | x | = | 24 5 |
| x | = | 24 5 | ÷ | 3 |
| = | 24 5 | × | 1 3 |
| = | 8 5 | × | 1 |
| x | = | 8 5 |
| x | = | 1.6 |
| 5 | x | + | 3 | = | 48 |
| 5 | x | = | 48 | − | 3 |
| 5 | x | = | 45 |
| x | = | 45 | ÷ | 5 |
| = | 45 | × | 1 5 |
| = | 9 | × | 1 |
| x | = | 9 |
| 2 | x | ÷ | 4 | = | 3 |
| 方程左边 = | 1 2 | x |
1 2 | x | = | 3 |
| x | = | 3 | ÷ | 1 2 |
| = | 3 | × | 2 |
| x | = | 6 |
| 6 | x | + | 24 | = | 90 |
| 6 | x | = | 90 | − | 24 |
| 6 | x | = | 66 |
| x | = | 66 | ÷ | 6 |
| = | 66 | × | 1 6 |
| = | 11 | × | 1 |
| x | = | 11 |