3 2 | ( | 2598 | − | x | ) | × | 1 | = | ( | 2598 | − | 300 | − | x | ) | × | 2 |
| 方程左边 = | 3 2 | ( | 2598 | − | x | ) |
3 2 | ( | 2598 | − | x | ) | = | ( | 2598 | − | 300 | − | x | ) | × | 2 |
| 方程左边 = | 3 2 | × | 2598 | − | 3 2 | x |
| = | 3897 | − | 3 2 | x |
| 3897 | − | 3 2 | x | = | ( | 2598 | − | 300 | − | x | ) | × | 2 |
| 方程右边 = | 2598 | × | 2 | − | 300 | × | 2 | − | x | × | 2 |
| = | 5196 | − | 600 | − | x | × | 2 |
| = | 4596 | − | 2 | x |
| 3897 | − | 3 2 | x | = | 4596 | − | 2 | x |
| - | 3 2 | x | + | 2 | x | = | 4596 | − | 3897 |
1 2 | x | = | 4596 | − | 3897 |
1 2 | x | = | 699 |
| x | = | 699 | ÷ | 1 2 |
| = | 699 | × | 2 |
| x | = | 1398 |