| ( | 19 20 | x | − | 11559 25 | ) | − | 9 10 | ( | 19 20 | x | − | 11559 25 | − | 5000 | ) | = | 980891 100 |
| 方程左边 = | 19 20 | x | − | 11559 25 | − | 9 10 | ( | 19 20 | x | − | 11559 25 | − | 5000 | ) |
| = | 19 20 | x | − | 11559 25 | − | 9 10 | × | 19 20 | x | + | 9 10 | × | 11559 25 | + | 9 10 | × | 5000 |
| = | 19 20 | x | − | 11559 25 | − | 171 200 | x | + | 104031 250 | + | 4500 |
| = | 19 200 | x | + | 1113441 250 |
19 200 | x | + | 1113441 250 | = | 980891 100 |
19 200 | x | = | 980891 100 | − | 1113441 250 |
19 200 | x | = | 2677573 500 |
| x | = | 2677573 500 | ÷ | 19 200 |
| = | 2677573 500 | × | 200 19 |
| = | 2677573 5 | × | 2 19 |
| x | = | 5355146 95 |
| x | = | 56369.957895 |