| ( | 2127 | − | x | ) | ( | 9 5 | − | 1 25 | ) | × | 41 100 | = | 749 |
| 方程左边 = | 2127 | ( | 9 5 | − | 1 25 | ) | × | 41 100 | − | x | ( | 9 5 | − | 1 25 | ) | × | 41 100 |
| = | 87207 100 | ( | 9 5 | − | 1 25 | ) | − | x | ( | 9 5 | − | 1 25 | ) | × | 41 100 |
| = | 87207 100 | × | 9 5 | − | 87207 100 | × | 1 25 | − | x | ( | 9 5 | − | 1 25 | ) | × | 41 100 |
| = | 784863 500 | − | 87207 2500 | − | x | ( | 9 5 | − | 1 25 | ) | × | 41 100 |
| = | 959277 625 | − | x | ( | 9 5 | − | 1 25 | ) | × | 41 100 |
| = | 959277 625 | − | x | × | 9 5 | × | 41 100 | + | x | × | 1 25 | × | 41 100 |
| = | 959277 625 | − | x | × | 369 500 | + | x | × | 41 2500 |
| = | 959277 625 | − | 451 625 | x |
959277 625 | − | 451 625 | x | = | 749 |
| - | 451 625 | x | = | 749 | − | 959277 625 |
| - | 451 625 | x | = | - | 491152 625 |
491152 625 | = | 451 625 | x |
451 625 | x | = | 491152 625 |
| x | = | 491152 625 | ÷ | 451 625 |
| = | 491152 625 | × | 625 451 |
| = | 491152 | × | 1 451 |
| x | = | 491152 451 |
| x | = | 1089.028825 |