| ( | ( | 260 | + | 220 | ) | × | 63 | − | x | ) | × | 17 20 | + | 18 | × | 63 | = | 523573 20 |
| 方程左边 = | ( | ( | 260 | + | 220 | ) | × | 63 | − | x | ) | × | 17 20 | + | 1134 |
| ( | ( | 260 | + | 220 | ) | × | 63 | − | x | ) | × | 17 20 | + | 1134 | = | 523573 20 |
| 方程左边 = | ( | 260 | + | 220 | ) | × | 63 | × | 17 20 | − | x | × | 17 20 | + | 1134 |
| = | ( | 260 | + | 220 | ) | × | 1071 20 | − | x | × | 17 20 | + | 1134 |
| = | 260 | × | 1071 20 | + | 220 | × | 1071 20 | − | 17 20 | x | + | 1134 |
| = | 13923 | + | 11781 | − | 17 20 | x | + | 1134 |
| = | 26838 | − | 17 20 | x |
| 26838 | − | 17 20 | x | = | 523573 20 |
| - | 17 20 | x | = | 523573 20 | − | 26838 |
| - | 17 20 | x | = | - | 13187 20 |
13187 20 | = | 17 20 | x |
17 20 | x | = | 13187 20 |
| x | = | 13187 20 | ÷ | 17 20 |
| = | 13187 20 | × | 20 17 |
| = | 13187 | × | 1 17 |
| x | = | 13187 17 |
| x | = | 775.705882 |