| ( | - | 657 5000 | − | 213 5000 | ) | × | 1 10 | + | ( | 339 2000 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | 224 2500 | − | 213 5000 | ) | × | 1 10 | + | ( | 224 2500 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | - | 657 5000 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | 339 2000 | − | 213 5000 | ) | × | 1 10 | = | x |
| 方程左边 = | - | 657 5000 | × | 1 10 | − | 213 5000 | × | 1 10 | + | ( | 339 2000 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | 224 2500 | − | 213 5000 | ) | × | 1 10 | + | ( | 224 2500 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | - | 657 5000 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) |
| = | - | 657 50000 | − | 213 50000 | + | ( | 339 2000 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | 224 2500 | − | 213 5000 | ) | × | 1 10 | + | ( | 224 2500 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | - | 657 5000 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | 339 2000 | − | 213 5000 | ) | × | 1 10 |
| = | - | 87 5000 | + | ( | 339 2000 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | 224 2500 | − | 213 5000 | ) | × | 1 10 | + | ( | 224 2500 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | - | 657 5000 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | 339 2000 | − | 213 5000 | ) | × | 1 10 |
| = | - | 87 5000 | + | 339 2000 | ( | - | 463 10000 | − | 141 2500 | ) | − | 213 5000 | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | 224 2500 | − | 213 5000 | ) | × | 1 10 | + | ( | 224 2500 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | - | 657 5000 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | 339 2000 | − | 213 5000 | ) |
| = | - | 87 5000 | − | 339 2000 | × | 463 10000 | − | 339 2000 | × | 141 2500 | − | 213 5000 | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | 224 2500 | − | 213 5000 | ) | × | 1 10 | + | ( | 224 2500 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | - | 657 5000 | − | 213 5000 | ) |
| = | - | 87 5000 | − | 156957 20000000 | − | 47799 5000000 | − | 213 5000 | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | 224 2500 | − | 213 5000 | ) | × | 1 10 | + | ( | 224 2500 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | - | 657 5000 | − | 213 5000 | ) | ( | - | 463 10000 | − | 141 2500 | ) | + | ( | 339 2000 | − | 213 5000 | ) |