| x | − | x | × | 56 100 | − | ( | x | × | 56 | + | x | × | 13 100 | ) | × | 10 100 | = | 6999 100 | − | 6999 100 | × | 9 25 | − | ( | 6999 100 | × | 9 25 | + | 6933 100 | × | 13 100 | ) | × | 10 100 |
| 方程左边 = | 11 25 | x | − | ( | x | × | 56 | + | x | × | 13 100 | ) | × | 10 100 |
11 25 | x | − | ( | x | × | 56 | + | x | × | 13 100 | ) | × | 10 100 | = | 6999 100 | − | 6999 100 | × | 9 25 | − | ( | 6999 100 | × | 9 25 | + | 6933 100 | × | 13 100 | ) | × | 10 100 |
| 方程左边 = | 11 25 | x | − | x | × | 56 | × | 10 100 | − | x | × | 13 100 | × | 10 100 |
| = | 11 25 | x | − | x | × | 28 5 | − | x | × | 13 1000 |
| = | - | 5173 1000 | x |
| - | 5173 1000 | x | = | 6999 100 | − | 6999 100 | × | 9 25 | − | ( | 6999 100 | × | 9 25 | + | 6933 100 | × | 13 100 | ) | × | 10 100 |
| 方程右边 = | 6999 100 | − | 62991 2500 | − | ( | 6999 100 | × | 9 25 | + | 6933 100 | × | 13 100 | ) | × | 10 100 |
| = | 27996 625 | − | ( | 6999 100 | × | 9 25 | + | 6933 100 | × | 13 100 | ) | × | 10 100 |
| - | 5173 1000 | x | = | 27996 625 | − | ( | 6999 100 | × | 9 25 | + | 6933 100 | × | 13 100 | ) | × | 10 100 |
| 方程右边 = | 27996 625 | − | 6999 100 | × | 9 25 | × | 10 100 | − | 6933 100 | × | 13 100 | × | 10 100 |
| = | 27996 625 | − | 62991 25000 | − | 90129 100000 |