| ( | ( | x | − | 558747471 20 | ) | − | ( | x | × | 5 100 | ) | ) | × | 1 125 | = | 220000 |
| 方程左边 = | ( | x | − | 558747471 20 | ) | × | 1 125 | − | ( | x | × | 5 100 | ) | × | 1 125 |
| = | x | × | 1 125 | − | 558747471 20 | × | 1 125 | − | ( | x | × | 5 100 | ) | × | 1 125 |
| = | x | × | 1 125 | − | 558747471 2500 | − | ( | x | × | 5 100 | ) | × | 1 125 |
| = | 1 125 | x | − | 558747471 2500 | − | x | × | 5 100 | × | 1 125 |
| = | 1 125 | x | − | 558747471 2500 | − | x | × | 1 2500 |
| = | 19 2500 | x | − | 558747471 2500 |
19 2500 | x | − | 558747471 2500 | = | 220000 |
19 2500 | x | = | 220000 | + | 558747471 2500 |
19 2500 | x | = | 1108747471 2500 |
| x | = | 1108747471 2500 | ÷ | 19 2500 |
| = | 1108747471 2500 | × | 2500 19 |
| = | 1108747471 | × | 1 19 |
| x | = | 1108747471 19 |
| x | = | 58355130.052631997 |