| ( | - | 2129 | ) | ÷ | x | = | 1 | − | ( | 6419 | ÷ | 1587 | ) |
| 方程两边同时乘以: | x |
| ( | - | 2129 | ) | = | 1 | x | − | ( | 6419 | ÷ | 1587 | ) | x |
| - | 2129 | = | 1 | x | − | ( | 6419 | ÷ | 1587 | ) | x |
| - | 2129 | = | 1 | x | − | 6419 | ÷ | 1587 | × | x |
| - | 2129 | = | 1 | x | − | 6419 1587 | x |
| - | 2129 | = | - | 4832 1587 | x |
4832 1587 | x | = | 2129 |
| x | = | 2129 | ÷ | 4832 1587 |
| = | 2129 | × | 1587 4832 |
| x | = | 3378723 4832 |
| x | = | 699.239031 |