| ( | 220 | × | 73 | − | x | ) | × | 19 20 | + | 8 | × | 73 | = | 320178 25 |
| 方程左边 = | ( | 220 | × | 73 | − | x | ) | × | 19 20 | + | 584 |
| ( | 220 | × | 73 | − | x | ) | × | 19 20 | + | 584 | = | 320178 25 |
| 方程左边 = | 220 | × | 73 | × | 19 20 | − | x | × | 19 20 | + | 584 |
| = | 15257 | − | x | × | 19 20 | + | 584 |
| = | 15841 | − | 19 20 | x |
| 15841 | − | 19 20 | x | = | 320178 25 |
| - | 19 20 | x | = | 320178 25 | − | 15841 |
| - | 19 20 | x | = | - | 75847 25 |
75847 25 | = | 19 20 | x |
19 20 | x | = | 75847 25 |
| x | = | 75847 25 | ÷ | 19 20 |
| = | 75847 25 | × | 20 19 |
| = | 75847 5 | × | 4 19 |
| x | = | 303388 95 |
| x | = | 3193.557895 |