| ( | 5000 | × | 12 | × | 9 10 | − | 70 100 | × | 124 | X | × | 32 500 | ) | ÷ | ( | 30 100 | × | 124 | X | + | 5 100 | × | 124 | X | ) | = | 19 500 |
| 方程两边同时乘以: | ( | 30 100 | × | 124 | X | + | 5 100 | × | 124 | X | ) |
| ( | 5000 | × | 12 | × | 9 10 | − | 70 100 | × | 124 | X | × | 32 500 | ) | = | 19 500 | ( | 30 100 | × | 124 | X | + | 5 100 | × | 124 | X | ) |
| 5000 | × | 12 | × | 9 10 | − | 70 100 | × | 124 | X | × | 32 500 | = | 19 500 | ( | 30 100 | × | 124 | X | + | 5 100 | × | 124 | X | ) |
| 5000 | × | 12 | × | 9 10 | − | 70 100 | × | 124 | X | × | 32 500 | = | 19 500 | × | 30 100 | × | 124 | X | + | 19 500 | × | 5 100 | × | 124 | X |
| 54000 | − | 3472 625 | X | = | 1767 1250 | X | + | 589 2500 | X |
| 54000 | − | 3472 625 | X | = | 4123 2500 | X |
| - | 3472 625 | X | − | 4123 2500 | X | = | - | 54000 |
| - | 18011 2500 | X | = | - | 54000 |
| 54000 | = | 18011 2500 | X |
18011 2500 | X | = | 54000 |
| X | = | 54000 | ÷ | 18011 2500 |
| = | 54000 | × | 2500 18011 |
| X | = | 135000000 18011 |
| X | = | 7495.419466 |