| ( | x | − | 7 2 | × | 4157 500 | ) | = | 3 5 | ( | x | − | 5 2 | × | 4157 500 | ) |
| 方程左边 = | x | − | 7 2 | × | 4157 500 |
| = | x | − | 29099 1000 |
| x | − | 29099 1000 | = | 3 5 | ( | x | − | 5 2 | × | 4157 500 | ) |
| 方程右边 = | 3 5 | x | − | 3 5 | × | 5 2 | × | 4157 500 |
| = | 3 5 | x | − | 12471 1000 |
| x | − | 29099 1000 | = | 3 5 | x | − | 12471 1000 |
| x | − | 3 5 | x | = | - | 12471 1000 | + | 29099 1000 |
2 5 | x | = | - | 12471 1000 | + | 29099 1000 |
2 5 | x | = | 4157 250 |
| x | = | 4157 250 | ÷ | 2 5 |
| = | 4157 250 | × | 5 2 |
| = | 4157 50 | × | 1 2 |
| x | = | 4157 100 |
| x | = | 41.57 |