| x | = | ( | 4963 50 | × | 8 | × | 71 50 | ) | ÷ | ( | 13 2 | − | 9 20 | ) |
| 方程两边同时乘以: | ( | 13 2 | − | 9 20 | ) |
| x | ( | 13 2 | − | 9 20 | ) | = | ( | 4963 50 | × | 8 | × | 71 50 | ) |
| x | × | 13 2 | − | x | × | 9 20 | = | ( | 4963 50 | × | 8 | × | 71 50 | ) |
| x | × | 13 2 | − | x | × | 9 20 | = | 4963 50 | × | 8 | × | 71 50 |
| x | × | 13 2 | − | x | × | 9 20 | = | 704746 625 |
121 20 | x | = | 704746 625 |
| x | = | 704746 625 | ÷ | 121 20 |
| = | 704746 625 | × | 20 121 |
| = | 704746 125 | × | 4 121 |
| x | = | 2818984 15125 |
| x | = | 186.379107 |