1 40 | × | 1000 | ( | 1 | − | x | ) | ÷ | 1 50 | + | 1000 | x | = | 56839 50 |
| 方程左边 = | 1250 | ( | 1 | − | x | ) | + | 1000 | x |
| 1250 | ( | 1 | − | x | ) | + | 1000 | x | = | 56839 50 |
| 方程左边 = | 1250 | × | 1 | − | 1250 | x | + | 1000 | x |
| = | 1250 | − | 1250 | x | + | 1000 | x |
| = | 1250 | − | 250 | x |
| 1250 | − | 250 | x | = | 56839 50 |
| - | 250 | x | = | 56839 50 | − | 1250 |
| - | 250 | x | = | - | 5661 50 |
5661 50 | = | 250 | x |
| 250 | x | = | 5661 50 |
| x | = | 5661 50 | ÷ | 250 |
| = | 5661 50 | × | 1 250 |
| x | = | 5661 12500 |
| x | = | 0.45288 |