| ( | 25343 1000 | + | x | ) | × | 63 20 | = | 50687 1000 | + | 6933 100 | − | x |
| 方程左边 = | 25343 1000 | × | 63 20 | + | x | × | 63 20 |
| = | 1596609 20000 | + | x | × | 63 20 |
1596609 20000 | + | 63 20 | x | = | 50687 1000 | + | 6933 100 | − | x |
| 方程右边 = | 120017 1000 | − | x |
1596609 20000 | + | 63 20 | x | = | 120017 1000 | − | x |
63 20 | x | + | x | = | 120017 1000 | − | 1596609 20000 |
83 20 | x | = | 120017 1000 | − | 1596609 20000 |
83 20 | x | = | 803731 20000 |
| x | = | 803731 20000 | ÷ | 83 20 |
| = | 803731 20000 | × | 20 83 |
| = | 803731 1000 | × | 1 83 |
| x | = | 803731 83000 |
| x | = | 9.683506 |