| ( | ( | 183 | − | x | ) | × | 87 10 | × | 5000 | × | 150 | ) | + | ( | ( | 21 | − | x | ) | × | 25000 | × | 150 | ) | = | 0 |
| 方程左边 = | ( | 183 | − | x | ) | × | 87 10 | × | 5000 | × | 150 | + | ( | ( | 21 | − | x | ) | × | 25000 | × | 150 | ) |
| = | ( | 183 | − | x | ) | × | 6525000 | + | ( | ( | 21 | − | x | ) | × | 25000 | × | 150 | ) |
| = | 183 | × | 6525000 | − | x | × | 6525000 | + | ( | ( | 21 | − | x | ) | × | 25000 | × | 150 | ) |
| = | 1194075000 | − | x | × | 6525000 | + | ( | ( | 21 | − | x | ) | × | 25000 | × | 150 | ) |
| = | 1194075000 | − | 6525000 | x | + | ( | 21 | − | x | ) | × | 25000 | × | 150 |
| = | 1194075000 | − | 6525000 | x | + | ( | 21 | − | x | ) | × | 3750000 |
| = | 1194075000 | − | 6525000 | x | + | 21 | × | 3750000 | − | x | × | 3750000 |
| = | 1194075000 | − | 6525000 | x | + | 78750000 | − | x | × | 3750000 |
| = | 1272825000 | − | 10275000 | x |
| 1272825000 | − | 10275000 | x | = | 0 |
| - | 10275000 | x | = | 0 | − | 1272825000 |
| - | 10275000 | x | = | - | 1272825000 |
| 1272825000 | = | 10275000 | x |
| 10275000 | x | = | 1272825000 |
| x | = | 1272825000 | ÷ | 10275000 |
| = | 1272825000 | × | 1 10275000 |
| = | 16971 | × | 1 137 |
| x | = | 16971 137 |
| x | = | 123.875912 |