| 1 | − | 21971 10000 | × | 1 10 | = | x | − | 3 10 | × | 21971 10000 | × | 1 10 |
| 方程左边 = | 1 | − | 21971 100000 |
| = | 78029 100000 |
78029 100000 | = | x | − | 3 10 | × | 21971 10000 | × | 1 10 |
| 方程右边 = | x | − | 65913 1000000 |
78029 100000 | = | x | − | 65913 1000000 |
| - | x | = | - | 65913 1000000 | − | 78029 100000 |
| x= | 846203 1000000 |