| 250 | ÷ | 200 | + | X | ÷ | 1000 | + | ( | 573 | − | X | ) | ÷ | 2000 | + | 150 | ÷ | 4457 50 | = | 169 50 |
| 方程左边 = | 5 4 | + | X | × | 1 1000 | + | ( | 573 | − | X | ) | × | 1 2000 | + | 7500 4457 |
| = | 52285 17828 | + | 1 1000 | X | + | ( | 573 | − | X | ) | × | 1 2000 |
52285 17828 | + | 1 1000 | X | + | ( | 573 | − | X | ) | × | 1 2000 | = | 169 50 |
| 方程左边 = | 52285 17828 | + | 1 1000 | X | + | 573 | × | 1 2000 | − | X | × | 1 2000 |
| = | 52285 17828 | + | 1 1000 | X | + | 573 2000 | − | X | × | 1 2000 |
| = | 28696361 8914000 | + | 1 2000 | X |
28696361 8914000 | + | 1 2000 | X | = | 169 50 |
1 2000 | X | = | 169 50 | − | 28696361 8914000 |
1 2000 | X | = | 1432959 8914000 |
| X | = | 1432959 8914000 | ÷ | 1 2000 |
| = | 1432959 8914000 | × | 2000 |
| = | 1432959 4457 | × | 1 |
| X | = | 1432959 4457 |
| X | = | 321.507516 |