47 40 | X | × | 43 50 | + | ( | 95 | − | X | ) | × | 37 5 | = | 131 50 |
| 方程左边 = | 2021 2000 | X | + | ( | 95 | − | X | ) | × | 37 5 |
2021 2000 | X | + | ( | 95 | − | X | ) | × | 37 5 | = | 131 50 |
| 方程左边 = | 2021 2000 | X | + | 95 | × | 37 5 | − | X | × | 37 5 |
| = | 2021 2000 | X | + | 703 | − | X | × | 37 5 |
| = | - | 12779 2000 | X | + | 703 |
| - | 12779 2000 | X | + | 703 | = | 131 50 |
| - | 12779 2000 | X | = | 131 50 | − | 703 |
| - | 12779 2000 | X | = | - | 35019 50 |
35019 50 | = | 12779 2000 | X |
12779 2000 | X | = | 35019 50 |
| X | = | 35019 50 | ÷ | 12779 2000 |
| = | 35019 50 | × | 2000 12779 |
| = | 35019 | × | 40 12779 |
| X | = | 1400760 12779 |
| X | = | 109.614211 |