| x | = | ( | 6000 | − | 3 50 | x | ) | × | 194481 160000 | + | ( | 5000 | − | 3 50 | x | ) | × | 9261 8000 | + | ( | 4000 | − | 3 50 | x | ) | × | 441 400 | + | ( | 3000 | − | 3 50 | x | ) | ( | 21 20 | ) | + | ( | 2000 | − | 3 50 | x | ) |
| 方程右边 = | 6000 | × | 194481 160000 | − | 3 50 | x | × | 194481 160000 | + | ( | 5000 | − | 3 50 | x | ) | × | 9261 8000 | + | ( | 4000 | − | 3 50 | x | ) | × | 441 400 | + | ( | 3000 | − | 3 50 | x | ) | ( | 21 20 | ) | + | ( | 2000 | − | 3 50 | x | ) |
| = | 583443 80 | − | 583443 8000000 | x | + | ( | 5000 | − | 3 50 | x | ) | × | 9261 8000 | + | ( | 4000 | − | 3 50 | x | ) | × | 441 400 | + | ( | 3000 | − | 3 50 | x | ) | ( | 21 20 | ) | + | ( | 2000 | − | 3 50 | x | ) |
| = | 583443 80 | − | 583443 8000000 | x | + | 5000 | × | 9261 8000 | − | 3 50 | x | × | 9261 8000 | + | ( | 4000 | − | 3 50 | x | ) | × | 441 400 | + | ( | 3000 | − | 3 50 | x | ) | ( | 21 20 | ) |
| = | 583443 80 | − | 583443 8000000 | x | + | 46305 8 | − | 27783 400000 | x | + | ( | 4000 | − | 3 50 | x | ) | × | 441 400 | + | ( | 3000 | − | 3 50 | x | ) | ( | 21 20 | ) | + | ( | 2000 | − | 3 50 | x | ) |