| ( | 4 5 | + | 1 | + | x | ) | ÷ | 10 | + | x | = | 27 250 |
| 方程左边 = | 4 5 | × | 1 10 | + | 1 | × | 1 10 | + | x | × | 1 10 | + | x |
| = | 2 25 | + | 1 10 | + | x | × | 1 10 | + | x |
| = | 9 50 | + | 11 10 | x |
9 50 | + | 11 10 | x | = | 27 250 |
11 10 | x | = | 27 250 | − | 9 50 |
11 10 | x | = | - | 9 125 |
| x | = | - | 9 125 | ÷ | 11 10 |
| = | - | 9 125 | × | 10 11 |
| = | - | 9 25 | × | 2 11 |
| x | = | - | 18 275 |
| x | = | - 0.065455 |