| 100 | x | − | 3 25 | × | 100 | ( | 13 100 | x | − | 5 | ) | − | ( | 580 | + | 40 | × | 100 | ) | = | 0 |
| 方程左边 = | 100 | x | − | 12 | ( | 13 100 | x | − | 5 | ) | − | ( | 580 | + | 40 | × | 100 | ) |
| 100 | x | − | 12 | ( | 13 100 | x | − | 5 | ) | − | ( | 580 | + | 40 | × | 100 | ) | = | 0 |
| 方程左边 = | 100 | x | − | 12 | × | 13 100 | x | + | 12 | × | 5 | − | ( | 580 | + | 40 | × | 100 | ) |
| = | 100 | x | − | 39 25 | x | + | 60 | − | ( | 580 | + | 40 | × | 100 | ) |
| = | 2461 25 | x | + | 60 | − | ( | 580 | + | 40 | × | 100 | ) |
| = | 2461 25 | x | + | 60 | − | 580 | − | 40 | × | 100 |
| = | 2461 25 | x | + | 60 | − | 580 | − | 4000 |
| = | 2461 25 | x | − | 4520 |
2461 25 | x | − | 4520 | = | 0 |
2461 25 | x | = | 0 | + | 4520 |
2461 25 | x | = | 4520 |
| x | = | 4520 | ÷ | 2461 25 |
| = | 4520 | × | 25 2461 |
| x | = | 113000 2461 |
| x | = | 45.916294 |