| ( | x | − | 1280 | ) | × | 3 4 | × | 4000 | = | ( | 4000 | + | 6000 | ÷ | 24 5 | ) | ( | x | − | 1280 | − | 6000 | × | 9 100 | ) | × | 3 4 |
| 方程左边 = | ( | x | − | 1280 | ) | × | 3000 |
| ( | x | − | 1280 | ) | × | 3000 | = | ( | 4000 | + | 6000 | ÷ | 24 5 | ) | ( | x | − | 1280 | − | 6000 | × | 9 100 | ) | × | 3 4 |
| 方程左边 = | x | × | 3000 | − | 1280 | × | 3000 |
| = | x | × | 3000 | − | 3840000 |
| 3000 | x | − | 3840000 | = | ( | 4000 | + | 6000 | ÷ | 24 5 | ) | ( | x | − | 1280 | − | 6000 | × | 9 100 | ) | × | 3 4 |
| 方程右边 = | 4000 | ( | x | − | 1280 | − | 6000 | × | 9 100 | ) | × | 3 4 | + | 6000 | ÷ | 24 5 | × | ( | x | − | 1280 | − | 6000 | × | 9 100 | ) | × | 3 4 |
| = | 3000 | ( | x | − | 1280 | − | 6000 | × | 9 100 | ) | + | 1875 2 | ( | x | − | 1280 | − | 6000 | × | 9 100 | ) |
| = | 3000 | x | − | 3000 | × | 1280 | − | 3000 | × | 6000 | × | 9 100 | + | 1875 2 | ( | x | − | 1280 | − | 6000 | × | 9 100 | ) |
| = | 3000 | x | − | 3840000 | − | 1620000 | + | 1875 2 | ( | x | − | 1280 | − | 6000 | × | 9 100 | ) |
| = | 3000 | x | − | 5460000 | + | 1875 2 | ( | x | − | 1280 | − | 6000 | × | 9 100 | ) |
| = | 3000 | x | − | 5460000 | + | 1875 2 | x | − | 1875 2 | × | 1280 | − | 1875 2 | × | 6000 | × | 9 100 |
| = | 3000 | x | − | 5460000 | + | 1875 2 | x | − | 1200000 | − | 506250 |
| = | 7875 2 | x | − | 7166250 |
| 3000 | x | − | 3840000 | = | 7875 2 | x | − | 7166250 |
| 3000 | x | − | 7875 2 | x | = | - | 7166250 | + | 3840000 |
| - | 1875 2 | x | = | - | 7166250 | + | 3840000 |
| - | 1875 2 | x | = | - | 3326250 |
| 3326250 | = | 1875 2 | x |
1875 2 | x | = | 3326250 |
| x | = | 3326250 | ÷ | 1875 2 |
| = | 3326250 | × | 2 1875 |
| = | 1774 | × | 2 |
| x | = | 3548 |