| ( | X | − | ( | X | ÷ | 113 100 | × | 13 100 | ) | + | 429 5000 | ) | ÷ | 331 50 | = | 9 10 |
| 方程左边 = | X | × | 50 331 | − | ( | X | ÷ | 113 100 | × | 13 100 | ) | × | 50 331 | + | 429 5000 | × | 50 331 |
| = | X | × | 50 331 | − | ( | X | ÷ | 113 100 | × | 13 100 | ) | × | 50 331 | + | 429 33100 |
| = | 50 331 | X | − | X | ÷ | 113 100 | × | 13 100 | × | 50 331 | + | 429 33100 |
| = | 50 331 | X | − | X | × | 650 37403 | + | 429 33100 |
| = | 5000 37403 | X | + | 429 33100 |
5000 37403 | X | + | 429 33100 | = | 9 10 |
5000 37403 | X | = | 9 10 | − | 429 33100 |
5000 37403 | X | = | 29361 33100 |
| X | = | 29361 33100 | ÷ | 5000 37403 |
| = | 29361 33100 | × | 37403 5000 |
| X | = | 1098189483 165500000 |
| X | = | 3317793 500000 |
| X | = | 6.635586 |