| ( | 3773 5 | − | X | ) | ÷ | 3773 5 | × | 100 | = | 3 10 |
| 方程左边 = | ( | 3773 5 | − | X | ) | × | 500 3773 |
| ( | 3773 5 | − | X | ) | × | 500 3773 | = | 3 10 |
| 方程左边 = | 3773 5 | × | 500 3773 | − | X | × | 500 3773 |
| = | 100 | − | X | × | 500 3773 |
| 100 | − | 500 3773 | X | = | 3 10 |
| - | 500 3773 | X | = | 3 10 | − | 100 |
| - | 500 3773 | X | = | - | 997 10 |
997 10 | = | 500 3773 | X |
500 3773 | X | = | 997 10 |
| X | = | 997 10 | ÷ | 500 3773 |
| = | 997 10 | × | 3773 500 |
| X | = | 3761681 5000 |
| X | = | 752.3362 |